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Monthly gross domestic product by industry: Conversion to NAICS 2002 and to reference year 2002

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The Daily

Friday, October 5, 2007

On October 31, 2007, with the release of the August 2007 data, the monthly gross domestic product (GDP) by industry program will use the 2002 North American Industrial Classification System (NAICS) instead of NAICS 1997. In addition, the reference year for the chained dollar data and the base year for the constant price data will change from 1997 to 2002.

Consequently, the current CANSIM tables 379-0017 to 379-0022 will be terminated and replaced with the new monthly table 379-0027. This new table will include changes to the industry detail, largely as a result of the conversion to NAICS 2002, which principally affects sector 51, information and cultural industries.

The change in reference year and base year in the new table 379-0027 will change the level but not the growth rates of the series for the period 1981 to 2001 inclusively, since it essentially consists of a rescaling of the already published data. However, the levels and growth rates for 2002 onward will undergo the regular annual revision process for monthly GDP that incorporates the more recent input-output tables for 2003 and 2004, revisions to source data and to seasonal factors, as well as improvements to some of the methodologies used to derive monthly value added by industry.

To help users to convert from the terminated CANSIM tables to the new table 379-0027, a concordance between the old and new vector numbers is available. This document also provides a detailed list of the changes to the industry detail.

For more information, contact the dissemination agent (toll-free 1-800-887-4623; 613-951-4623;, Industry Accounts Division.