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|Classifications used to code responses||Census years for which data can be compared||Comments|
|Source: Statistics Canada, 2006 Census of Population.|
|2002 North American Industry Classification System||2001, 2006||To compare the 2001 and 2006 data, the variable Industry (historical) should be used.|
|1997 North American Industry Classification System||2001||No comments|
|1980 Standard Industrial Classification||1986, 1991, 1996, 2001||The 2001 Census industry responses are coded
to the 1980 Standard Industrial Classification codes. This allows for
comparison between the 1986, 1991, 1996 and 2001 censuses.
This is the only industrial classification available for the 1996 Census.
|1970 Standard Industrial Classification||1971, 1981, 1986, 1991||For comparisons with 1971 data, adjustments must be made to the 1981, 1986 and 1991 labour force universes. (See Appendix E for further information on historical comparability of labour force data.)|