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For more information on this release:
E-mail: business_stats@cso.ie Stephanie Kelleher (+353) 21 453 5123 Alan Finlay (+353) 21 453 5211 Mairéad Ní Chuill (+353) 21 453 5242
For general information on CSO statistics:
information@cso.ie (+353) 21 453 5000 On-line ISSN 2009-5384
Notice of Revisions: The Industrial Production and Turnover Indices were revised on 13th December 2021. See here for further information. 
CSO statistical release, , 11am

Industrial Production and Turnover

December 2018 (Provisional) November 2018 (Final)

Seasonally Adjusted Manufacturing Industries
(Base Year 2015 = 100)
Production IndexTurnover Index
December 2017101.9104.3
November 201896.398.9
December 201882.693.8
Monthly % change-14.2-5.2
Annual % change-18.9-10.1
  
Jul 2018 - Sep 2018103.5106.2
Oct 2018 - Dec 201895.099.8
% change-8.2-6.1

Industrial Production decreased by 14.2% in December 2018

Figure 1 Manufacturing Industries Seasonally Adjusted Sep 2016 - Dec 2018
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Production for Manufacturing Industries for December 2018 was 14.2% lower than in November 2018 (see above and table 1). On an annual basis production for December 2018 was 18.9% lower than in December 2017. Industrial production for Manufacturing Industries for the three months October 2018 to December 2018 was 8.2% lower than in the preceding three month period (see above and tables 3a to 3c). 

The “Modern” Sector showed a monthly decrease in production of 16.0% in December 2018 and an annual decrease of 24.1% when compared with December 2017. There was a monthly decrease of 4.6% in the “Traditional” Sector for December 2018 and an annual increase of 1.7% compared with December 2017 (see table 2).

Turnover decreased by 5.2% for Manufacturing Industries in December 2018 when compared with November 2018 (see above and tables 5a to 5c).  On an annual basis turnover decreased by 10.1% when compared with December 2017.

Unadjusted indices are available on our website

Table 1 Volume Indices of Production1Base Year: 2015=100
  Manufacturing Industries Industries
  NACE 10 - 33 NACE 05 - 35
  Seasonally adjusted
Period Index% change on previous periodAnnual % change Index% change on previous periodAnnual % change
2015Year100.0 35.9 100.0 32.9
2016Year101.8 1.8 101.8 1.8
2017Year99.1 -2.7 99.5 -2.3
2018Year98.6 -0.5 99.4 -0.1
         
20161st quarter104.89.35.3 104.58.85.1
 2nd quarter99.3-5.2-1.8 99.4-4.9-1.8
 3rd quarter96.0-3.3-5.6 96.2-3.3-5.3
 4th quarter106.510.911.1 106.410.610.7
         
20171st quarter97.2-8.7-7.2 97.9-8.0-6.3
 2nd quarter94.5-2.8-4.9 95.1-2.9-4.4
 3rd quarter98.44.22.5 98.83.92.7
 4th quarter104.46.1-2.0 104.65.9-1.7
         
20181st quarter96.2-7.8-1.0 96.9-7.4-1.1
 2nd quarter98.92.74.6 99.73.04.9
 3rd quarter103.54.75.2 104.14.45.4
 4th quarter95.0-8.2-9.0 96.2-7.6-8.0
        
2016December102.8-2.3-3.1 102.8-2.3-2.8
       
2017January98.6-4.1-20.6 99.0-3.7-19.7
February96.1-2.50.6 97.1-1.91.4
 March97.00.92.6 97.80.73.3
 April102.35.57.8 102.44.77.8
 May93.5-8.6-3.9 94.1-8.1-3.5
 June87.6-6.3-17.2 88.7-5.7-16.1
 July101.716.0-0.8 102.115.1-0.5
August92.6-8.93.5 92.8-9.13.4
September101.09.05.0 101.49.25.3
October101.10.2-9.3 101.50.1-8.9
November110.28.94.7 109.88.34.4
December101.9-7.5-0.8 102.5-6.7-0.3
        
2018January106.24.27.7 106.53.97.6
 February95.8-9.8-0.3 96.4-9.4-0.6
 March86.7-9.5-10.6 87.7-9.1-10.4
 April97.812.8-4.4 98.612.4-3.8
 May102.75.09.8 103.34.89.8
 June96.1-6.49.7 97.3-5.89.7
 July96.80.7-4.8 97.70.4-4.4
 August105.59.013.9 105.98.514.1
 September108.22.57.2 108.62.57.1
 October106.0-2.04.9 106.9-1.55.4
 November96.3-9.2-12.6 97.4-8.9-11.3
 December82.6-14.2-18.9 84.3-13.5-17.8
1 All data for the latest month, quarter and year is provisional
Table 2 Volume Indices of Production1 for "Modern"2 and "Traditional"2 SectorsBase Year: 2015=100
Modern Sector Traditional (All Other Sectors)
Seasonally adjusted
Period Index% change on previous periodAnnual % change Index% change on previous periodAnnual % change
2015Year100.0 50.2 100.0 7.3
2016Year101.8 1.8 101.8 1.8
2017Year98.0 -3.7 105.0 3.1
2018Year97.1 -0.9 107.9 2.8
         
20161st quarter109.011.35.2 98.41.11.4
 2nd quarter95.9-12.0-3.8 101.53.2-0.2
 3rd quarter92.3-3.7-5.7 104.12.50.2
 4th quarter111.120.413.4 102.4-1.65.2
         
20171st quarter96.2-13.4-11.8 112.610.014.5
 2nd quarter88.8-7.7-7.4 102.6-8.91.1
 3rd quarter95.67.73.6 100.9-1.7-3.0
 4th quarter109.714.8-1.2 104.13.21.7
         
20181st quarter96.9-11.70.7 102.8-1.3-8.8
 2nd quarter93.2-3.85.0 106.63.83.9
 3rd quarter100.57.95.2 109.52.78.5
 4th quarter97.1-3.5-11.5 112.82.98.3
        
2016December112.68.0-1.7 103.51.29.8
        
2017January110.5-1.8-21.7 107.13.58.2
February90.8-17.8-4.5 105.9-1.27.6
 March87.2-4.0-4.0 124.918.027.9
 April97.712.16.4 103.9-16.81.7
 May85.8-12.2-8.4 102.2-1.63.8
 June82.9-3.3-18.9 101.7-0.5-2.2
 July101.422.3-2.2 101.2-0.5-0.8
August82.9-18.34.0 99.2-2.1-2.0
September102.523.79.7 102.43.2-6.0
October107.34.7-7.9 103.61.32.1
November112.95.28.3 102.4-1.20.2
December109.0-3.4-3.2 106.43.92.8
        
2018January120.810.89.3 101.4-4.7-5.3
 February88.8-26.4-2.2 104.22.7-1.5
 March81.0-8.9-7.1 102.6-1.5-17.9
 April94.817.1-3.0 101.8-0.8-2.0
 May96.51.812.6 109.37.36.9
 June88.3-8.66.5 108.8-0.47.0
 July93.45.9-7.9 108.1-0.66.8
 August98.75.619.0 111.63.212.6
 September109.511.06.8 108.9-2.56.4
 October109.90.42.4 116.67.112.5
 November98.5-10.4-12.7 113.4-2.810.8
 December82.7-16.0-24.1 108.2-4.61.7
1 All data for the latest month, quarter and year is provisional
2 See Background notes for detailed breakdown
Table 3a Volume Indices of Production for Industrial Sectors - Provisional Results December 2018Base Year: 2015=100
 December 2018
  Seasonally Adjusted Indices
Industrial SectorNACE Index% change on previous monthAnnual % change
Food products10 91.5-9.8-5.8
Meat and meat products101 110.1-5.2-4.4
Dairy products105 140.38.830.2
Bakery and farinaceous products107 91.4-4.0-12.3
Grain mill and starch products; Prepared animal feeds106,109 126.8-7.98.1
Other food products102-104,108 83.0-13.5-10.9
Beverages11 ***
Textiles, wearing apparel and leather related products13-15 110.1-1.72.4
Wood and wood products, except furniture16 156.4-0.73.9
Paper and paper products; Printing and reproduction of recorded media17-18 90.51.325.1
Chemicals and chemical products20 ***
Basic pharmaceutical products and preparations21 ***
Rubber and plastic products22 142.126.529.8
Other non-metallic mineral products23 147.913.121.0
Basic metals and fabricated metal products24-25 114.32.54.6
Computer, electronic and optical products26 ***
Electrical equipment27 126.6-6.5-1.6
Machinery and equipment, not elsewhere classified28 ***
Transport equipment29-30 122.716.013.6
Tobacco, leather, coke and refined petroleum products, transport equipment, furniture, repair and installation of machinery and equipment12,15,19,29-31,33 96.9-26.60.4
Modern20,21,26,27, 182, 325 82.7-16.0-24.1
TraditionalAll Excluding Modern 108.2-4.61.7
Electricity, gas, steam and air conditioning supply35 120.8-3.44.0
Manufacturing industries10-33 82.6-14.2-18.9
Mining and quarrying05-09 ***
Transportable goods industries05-33 82.9-13.8-18.8
Industries05-35 84.3-13.5-17.8
* Data suppressed for confidentiality reasons.
Table 3b Volume Indices of Production for Industrial Sectors 3 monthly - Provisional ResultsBase Year: 2015=100
 October 2018 - December 2018
  Seasonally Adjusted Indices
Industrial SectorNACE Index% change on previous periodAnnual % change
Food products10 99.12.76.1
Meat and meat products101 114.1-1.00.2
Dairy products105 130.913.219.5
Bakery and farinaceous products107 93.8-5.0-9.5
Grain mill and starch products; Prepared animal feeds106,109 131.55.012.7
Other food products102-104,108 93.12.06.0
Beverages11 ***
Textiles, wearing apparel and leather related products13-15 113.2-8.21.1
Wood and wood products, except furniture16 154.4-7.03.3
Paper and paper products; Printing and reproduction of recorded media17-18 90.43.321.0
Chemicals and chemical products20 ***
Basic pharmaceutical products and preparations21 ***
Rubber and plastic products22 128.93.620.4
Other non-metallic mineral products23 135.76.09.4
Basic metals and fabricated metal products24-25 114.911.52.9
Computer, electronic and optical products26 ***
Electrical equipment27 132.7-4.54.7
Machinery and equipment, not elsewhere classified28 ***
Transport equipment29-30 117.4-10.910.0
Tobacco, leather, coke and refined petroleum products, transport equipment, furniture, repair and installation of machinery and equipment12,15,19,29-31,33 119.50.811.7
Modern20,21,26,27,182, 325 97.1-3.5-11.5
TraditionalAll Excluding Modern 112.82.98.3
Electricity, gas, steam and air conditioning supply35 122.43.68.8
Manufacturing industries10-33 95.0-8.2-9.0
Mining and quarrying05-09 ***
Transportable goods industries05-33 95.0-8.2-8.7
Industries05-35 96.2-7.6-8.0
* Data suppressed for confidentiality reasons.
Table 3c Volume Indices of Production for Industrial Sectors - Final Results November 2018Base Year: 2015=100
 November 2018
  Seasonally Adjusted Indices
Industrial SectorNACE Index% change on previous monthAnnual % change
Food products10 101.5-2.813.1
Meat and meat products101 116.20.01.8
Dairy products105 128.94.221.3
Bakery and farinaceous products107 95.20.7-5.5
Grain mill and starch products; Prepared animal feeds106,109 137.75.921.6
Other food products102-104,108 95.9-4.714.5
Beverages11 ***
Textiles, wearing apparel and leather related products13-15 112.0-4.7-6.5
Wood and wood products, except furniture16 157.55.55.5
Paper and paper products; Printing and reproduction of recorded media17-18 89.3-2.514.6
Chemicals and chemical products20 ***
Basic pharmaceutical products and preparations21 ***
Rubber and plastic products22 112.3-15.23.3
Other non-metallic mineral products23 130.71.64.5
Basic metals and fabricated metal products24-25 111.5-6.30.0
Computer, electronic and optical products26 ***
Electrical equipment27 135.4-0.54.9
Machinery and equipment, not elsewhere classified28 ***
Transport equipment29-30 105.8-14.3-2.0
Tobacco, leather, coke and refined petroleum products, transport equipment, furniture, repair and installation of machinery and equipment12,15,19,29-31,33 131.91.77.3
Modern20,21,26,27,182, 325 98.5-10.4-12.7
TraditionalAll Excluding Modern 113.4-2.810.8
Electricity, gas, steam and air conditioning supply35 125.13.112.5
Manufacturing industries10-33 96.3-9.2-12.6
Mining and quarrying05-09 ***
Transportable goods industries05-33 96.3-9.0-12.3
Industries05-35 97.4-8.9-11.3
* Data suppressed for confidentiality reasons.
Table 4 Industrial Turnover Indices1Base Year: 2015=100
Manufacturing Industries Transportable Goods Industries2
NACE 10 - 33 NACE 05 - 33
Seasonally adjusted
Period Index% change on previous periodAnnual % change Index% change on previous periodAnnual % change
2015Year100.0 68.1 100.0 67.6
2016Year102.9 2.9 102.9 2.9
2017Year97.7 -5.1 97.8 -4.9
2018Year101.8 4.3 101.9 4.2
         
20161st quarter103.44.86.3 103.86.05.6
 2nd quarter99.8-3.5-3.4 99.8-3.9-3.5
 3rd quarter100.00.20.2 99.90.20.2
 4th quarter108.08.09.5 107.77.710.0
         
20171st quarter97.1-10.1-6.1 97.7-9.2-5.9
 2nd quarter93.5-3.7-6.3 93.6-4.2-6.2
 3rd quarter94.41.0-5.6 94.50.9-5.5
 4th quarter104.710.9-3.0 104.610.8-2.8
         
20181st quarter99.4-5.12.3 99.7-4.72.1
 2nd quarter101.62.38.7 101.72.08.6
 3rd quarter106.24.612.6 106.34.512.5
 4th quarter99.8-6.1-4.7 99.8-6.1-4.7
         
2016December102.2-4.80.3 102.2-4.50.8
       
2017January97.9-4.3-17.5 98.5-3.6-17.5
February96.8-1.1-0.9 97.2-1.30.1
 March96.6-0.22.9 97.30.12.7
 April99.63.13.9 99.82.53.8
 May92.1-7.6-5.4 92.3-7.5-5.2
 June88.8-3.6-16.3 88.7-3.9-16.2
 July95.57.5-11.8 95.67.7-11.6
 August87.3-8.5-9.2 87.4-8.5-9.1
 September100.414.95.0 100.414.85.2
 October103.02.6-9.9 102.62.1-9.8
 November106.93.7-0.5 106.94.2-0.2
 December104.3-2.42.0 104.5-2.22.3
         
2018January107.63.19.9 108.03.39.6
 February100.4-6.63.8 100.7-6.83.6
 March90.1-10.3-6.8 90.5-10.1-7.0
 April100.611.71.0 100.811.31.0
 May105.24.614.3 105.34.514.1
 June99.0-5.911.5 99.0-6.011.6
 July101.92.96.7 102.03.06.8
 August107.75.823.4 107.85.623.3
 September109.11.38.7 109.11.28.6
 October106.6-2.33.5 106.4-2.53.7
 November98.9-7.2-7.4 99.0-6.9-7.3
 December93.8-5.2-10.1 93.9-5.2-10.2
1 All data for the latest month, quarter and year is provisional
2 See Background notes for detailed breakdown
Table 5a Turnover Indices for Industrial Sectors - Provisional Results December 2018Base Year: 2015=100
 December 2018
  Seasonally Adjusted Indices
Industrial SectorNACE Index% change on previous monthAnnual % change
Food products10 99.3-7.3-5.3
Meat and meat products101 109.6-4.4-1.7
Dairy products105 133.43.32.3
Bakery and farinaceous products107 87.3-4.2-16.1
Grain mill and starch products; Prepared animal feeds106,109 124.2-3.512.9
Other food products102-104,108 78.6-17.5-12.3
Beverages11 ***
Textiles, wearing apparel and leather related products13-15 103.6-2.710.2
Wood and wood products, except furniture16 128.91.98.6
Paper and paper products; Printing and reproduction of recorded media17-18 116.63.922.1
Chemicals and chemical products20 ***
Basic pharmaceutical products and preparations21 ***
Rubber and plastic products22 116.5-2.7-5.7
Other non-metallic mineral products23 126.814.615.3
Basic metals and fabricated metal products24-25 114.55.78.7
Computer, electronic and optical products26 ***
Electrical equipment27 112.3-9.3-14.1
Machinery and equipment, not elsewhere classified28 ***
Transport equipment29-30 127.024.616.3
Tobacco, leather, coke and refined petroleum products, transport equipment, furniture, repair and installation of machinery and equipment12,15,19,29-31,33 93.5-23.5-1.5
Electricity, gas, steam and air conditioning supply35 ......
Manufacturing industries10-33 93.8-5.2-10.1
Mining and quarrying05-09 97.9-12.4-20.3
Transportable goods industries05-33 93.9-5.2-10.2
Industries05-35 ......
* Data suppressed for confidentiality reasons.
.. Data not available
Table 5b Turnover Indices for Industrial Sectors 3 monthly - Provisional ResultsBase Year: 2015=100
 October 2018 - December 2018
  Seasonally Adjusted Indices
Industrial SectorNACE Index% change on previous periodAnnual % change
Food products10 105.11.23.7
Meat and meat products101 112.8-0.72.5
Dairy products105 129.83.24.8
Bakery and farinaceous products107 89.6-6.6-10.9
Grain mill and starch products; Prepared animal feeds106,109 126.32.816.3
Other food products102-104,108 91.1-0.63.9
Beverages11 ***
Textiles, wearing apparel and leather related products13-15 106.0-12.27.6
Wood and wood products, except furniture16 126.0-2.75.2
Paper and paper products; Printing and reproduction of recorded media17-18 116.7-5.720.6
Chemicals and chemical products20 ***
Basic pharmaceutical products and preparations21 ***
Rubber and plastic products22 123.82.73.7
Other non-metallic mineral products23 116.06.04.2
Basic metals and fabricated metal products24-25 112.67.74.2
Computer, electronic and optical products26 ***
Electrical equipment27 122.0-9.8-2.4
Machinery and equipment, not elsewhere classified28 ***
Transport equipment29-30 116.3-2.19.3
Tobacco, leather, coke and refined petroleum products, transport equipment, furniture, repair and installation of machinery and equipment12,15,19,29-31,33 112.82.99.9
Electricity, gas, steam and air conditioning supply35 ......
Manufacturing industries10-33 99.8-6.1-4.7
Mining and quarrying05-09 118.4-6.8-3.5
Transportable goods industries05-33 99.8-6.1-4.7
Industries05-35 ......
* Data suppressed for confidentiality reasons.
.. Data not available
Table 5c Turnover Indices for Industrial Sectors - Final Results November 2018Base Year: 2015=100
 November 2018
  Seasonally Adjusted Indices
Industrial SectorNACE Index% change on previous monthAnnual % change
Food products10 107.2-1.59.4
Meat and meat products101 114.70.65.0
Dairy products105 129.21.77.6
Bakery and farinaceous products107 91.10.7-6.0
Grain mill and starch products; Prepared animal feeds106,109 128.72.323.8
Other food products102-104,108 95.2-4.311.7
Beverages11 ***
Textiles, wearing apparel and leather related products13-15 106.5-1.55.5
Wood and wood products, except furniture16 126.53.34.1
Paper and paper products; Printing and reproduction of recorded media17-18 112.2-7.510.4
Chemicals and chemical products20 ***
Basic pharmaceutical products and preparations21 ***
Rubber and plastic products22 119.8-11.40.7
Other non-metallic mineral products23 110.70.0-0.9
Basic metals and fabricated metal products24-25 108.3-5.8-0.9
Computer, electronic and optical products26 ***
Electrical equipment27 123.9-4.6-4.8
Machinery and equipment, not elsewhere classified28 ***
Transport equipment29-30 102.0-15.0-3.3
Tobacco, leather, coke and refined petroleum products, transport equipment, furniture, repair and installation of machinery and equipment12,15,19,29-31,33 122.1-0.48.0
Electricity, gas, steam and air conditioning supply35 ......
Manufacturing industries10-33 98.9-7.2-7.4
Mining and quarrying05-09 111.8-23.1-12.2
Transportable goods industries05-33 99.0-6.9-7.3
Industries05-35 ......
* Data suppressed for confidentiality reasons.
.. Data not available

Background Notes

Introduction  

The Monthly Industrial Inquiry (MII) monitors the volume of production and value of turnover of industrial local units. Two indices are compiled from the survey – the monthly index of production and the monthly index of turnover.

The monthly index of production measures the change in the volume of production (i.e. value added at constant prices) each month. 

The monthly index of turnover measures the change in the level of sales each month of industrial products, whether manufactured in the month in question or in previous periods (excluding non-industrial activity where practicable). The turnover indices outlined in this release are exclusive of VAT. 

The principal difference between the production and turnover indices is that the production index traces the quantitative volume of production (i.e. with the effect of price changes excluded) each month whether sold or not, whereas the turnover index reflects both the volume of sales and the price level.  

Starting with January 2015 updated industrial production and turnover indices are being published to base year 2015=100. 

Sample covered

The monthly industrial inquiry covers all the larger local units which between them account for the bulk of industrial output – in general those which in the base year 2015 had twenty or more persons engaged in NACE divisions 5 to 35. For certain sectors the threshold of 20 persons engaged is lowered where this is considered necessary to ensure representativeness of the sample or where data for a sector would have to be kept confidential if a threshold at 20 persons engaged was applied. The business activity classifications are based on the Statistical Classification of Economic Activities in the European Community (NACE Rev. 2).

The provisional results are published about 40 days after the reference month. At that point, the response rates are typically 46% of local units surveyed covering 84% of the value of production and 82% of the value of turnover. The corresponding figures for the final results, one month later, are 66%, 95% and 94% respectively. These response rates are based on averages for the 12 months of 2017. 

Methodology

Index calculation

Individual turnover sub-indices are compiled for each detailed NACE class (i.e. NACE 4-digit level). These sub-indices are combined to provide the indices for broader sectoral groupings (NACE 2-digit and groupings of NACE) using the turnover as the weight.  The production indices are created in the same way but use the gross value added at factor cost (GVA) as the weight.  The production indices are calculated at constant prices, using the Wholesale Price Index (Base 2015 = 100) as deflators.  The GVA and turnover weights are from the 2015 Census of Industrial Production (CIP). The weights and base year are revised every five years. 

Globalisation and Measurement of Industrial Production

The level shift of 26% in GDP in 2015 was driven by relocations of entire balance sheets to Ireland, with the activity related to these relocations having consequential impacts on the corresponding annual and monthly industrial statistics. These relocated balance sheets were dominated by intellectual property. The practice of relocating intellectual property to Ireland has been growing in recent years, but the scale of the relocations in 2015 was substantial and added €300 billion to Ireland’s capital stocks.

Associated with the relocations were significant increases in contract manufacturing activity attributable to Ireland. While contract manufacturing and outsourcing arrangements – both by Irish and foreign-owned enterprises - were not new per se, the level of increase seen in 2015 was substantially greater than in previous years. The Index of Industrial Production increased by 33% between 2014 and 2015.

The CSO’s treatment of contract manufacturing in the MII follows the definitions set out in the UN 2010 International Recommendations for the Index of Industrial Production. The relevant section of the UN recommendations, on the treatment of outsourcing activities is as follows:

 

"Outsourcing of parts of the production process

If only part of the production process is outsourced, the principal is classified to the ISIC class that corresponds to the activity representing the complete production process, i.e., it is classified as if it were carrying out the complete process, including the contracted work, itself.

This applies not only to the outsourcing of support functions in the production process, such as accounting or computing activities, but also to the outsourcing of parts of the core production process, such as parts of a manufacturing process.

Outsourcing of the complete production process

In general, if the principal outsources the complete production process of a good or service, it is classified as if it were carrying out the production process itself. This applies in particular to all service-producing activities, including construction.

In the case of manufacturing, however, the following special considerations apply. In manufacturing, the principal provides the contractor with the technical specifications of the manufacturing activity to be carried out on the input materials. The input materials (raw materials or intermediate goods) can either be provided (owned) by the principal or not.

A principal who completely outsources the transformation process should be classified into manufacturing if and only if it owns the input materials to the production process – and therefore owns the final output." 

On the basis of these recommendations outsourced production is included as part of an enterprise’s Irish production. The inverse (i.e. Irish companies being sub-contracted to produce for foreign companies) has been excluded to avoid double counting.

The PRODCOM annual survey provides statistics on domestic production sold in Ireland annually.  

Seasonal Adjustment 

Seasonal adjustment is conducted using the direct seasonal adjustment approach. Under this approach each individual series is independently adjusted, i.e. aggregate series are adjusted without reference to the component series. Seasonal adjustment models are developed for each series based on unadjusted data spanning the months from January 2000 to the current period. These models are then applied to the entire series. Seasonal factors are updated each month.

The adjustments are completed by applying the X-13-ARIMA model, developed by the U.S. Census Bureau to the unadjusted data. This methodology estimates seasonal factors while also taking into consideration factors that impact on the quality of the seasonal adjustment such as:

• Calendar effects, e.g. the timing of Easter

• Outliers, temporary changes and level shifts in the series 

For additional information on the use of X-13-ARIMA see https://www.census.gov/srd/www/winx13/ 

NACE classification

The business activity classifications used in this Statistical release are based on the Statistical Classification of Economic Activities in the European Community i.e. NACE Rev. 2. For further information on the NACE Rev. 2 classification of industrial activity, visit the CSO website  http://www.cso.ie/px/u/NACECoder/NACEItems/searchnace.asp 

Definitions

"All Industries"

All industries is comprised of all sectors classified NACE 05 to 35 inclusive. This includes Mining and quarrying NACE 05 to 09, Manufacturing Industries NACE 10 to 33, Electricity, gas, steam and air conditioning supply NACE 35.

"Manufacturing Industries"

Manufacturing Industries is comprised of all sectors classified NACE 10 to 33 inclusive.

"Transportable Goods Industries"

Transportable Goods Industries is comprised of all sectors classified NACE 05 to 33 inclusive. This includes Mining and quarrying NACE 05 to 09 and Manufacturing Industries NACE 10 to 33.

 “Modern” Sector

The Modern Sector includes the following industrial sectors:

NACE 20.00 - 21.20 Chemicals and pharmaceuticals

NACE 26.00 - 27.90 Computer, electronic, optical and electrical equipment

NACE 18.20 Reproduction of recorded media

NACE 32.50 Medical and dental instruments and supplies

"Traditional” Sector

The Traditional Sector includes All Industries (NACE 05 to 35) excluding the “Modern” sector as detailed above.  

Wholesale Price Index (Base Year = 2015)

The wholesale price indices were revised in March 2018 to include updated weights (base year = 2015). New base year weights were compiled for the Wholesale Price Index using the results of the 2015 Census of Industrial Production (CIP) and the Prodcom Inquiry surveys. New base weights were applied to each three digit NACE group on the basis of the Census of Industrial Production and the commodity group weights were assigned on the basis of the Prodcom Inquiry. For further information on the updated WPI indices see the CSO publication Wholesale Price Index, Introduction of Updated Series Base Year 2015 = 100. 

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