This publication is the third issue of Input-Output Structure of the Canadian Economy, Cat. 15-201-x in its electronic version. Noticeable features are:

• Improved data quality: Statistics Canada undertook a massive project to improve its provincial economic statistics in 1996. Using sub-national surveys and other improved sources, the reliability of statistics published here is substantially improved and is approximately equal across provinces.
• Provincial input-output tables: Beginning with reference year 1997, input-output tables are compiled and published annually in this catalogue for each province and territory of Canada. Sub-national tables sum to the national tables for Canada. The accounting framework and concepts of these tables are identical to the national tables that date back to the 1961 reference year. We also refer in the text to exports and imports between provinces as well as abroad. To have access to the interprovincial trade data please consult the following table in CANSIM Table 386-0002.
• NAICS: In the present input-output tables (I/O) industries are classified by the North American Industry Classification (NAICS), rather than the 1980 Standard Industrial Classification (SIC), to be consistent with Statistics Canada's adoption of NAICS. This has led to changes in the detail and presentation of goods and services. Two more classifications have been added for detailed level of dissemination: The industry classification level of dissemination has 283 industries and the commodity has 713 commodities. These classifications are in concordance to their respective "complete" detailed classification level. These new classifications make the presentation of the detailed I/O tables exempt of empty rows or columns of data.
• Valuation of industry GDP: The valuation of industry gross domestic product (GDP) has changed from factor cost to basic price, in accordance with conventions recommended by the United Nations report, System of National Accounts, 1993. Under the old valuation, industry gross domestic product was calculated to include the returns to labour and capital only, excluding taxes or production subsidies. The new valuation of industry GDP is basic prices which includes Other Taxes on Production and Other Subsidies on Production. Data on gross output is at modified basic price, because production data show prices actually received by producers thus reflecting the effect of subsidies on products. For this reason, we have made available at all levels of aggregation of the Input-Output tables the breakdown of subsidies into its components: subsidies on products and subsidies on production. This will be more convenient to identify all the components of GDP at basic price and at market price.
• Refinements to the 1993 SNA conventions: A number of refinements to the adopted recommendations were implemented affecting the treatment of specific transactions or industries.