I am looking for data on sales for different industries (2-digit SIC codes only) in Canada, ideally for the years 2000-2012. Is this data available at the RDC?
From Industry Canada you have Canadian Trade By Industry (SIC Codes) http://www.ic.gc.ca/sc_mrkti/tdst/tdo/tdo.php?lang=30&productType=SIC SIC data, however, no longer being updated. There is also Trade By Industry (NAICS) http://www.ic.gc.ca/sc_mrkti/tdst/tdo/tdo.php?lang=30&productType=NAICS module based on NAICS code to obtain latest industry data.
The classification version in use at Statistics Canada is the North American Industry Classification System (NAICS) Canada 2012. You have concordances between classifications available at the following site: http://www.statcan.gc.ca/concepts/concordances-classifications-eng.htm