![]() Similarly, the symmetric final demand table shows all purchases by a final use category from all other industries, including expenditures on imports and inventory withdrawals as well as all expenditures on indirect taxes. The input-output tables show the inter-industry transactions, that is, all purchases of an industry from all other industries, including expenditures on imports and inventory withdrawals, as well as all expenditures on primary inputs. These symmetric industry-by-industry tables are referred to as input-output tables. While the supply and use tables closely reflect actual economic transactions, certain analytical and modeling purposes, however, require symmetric industry-by-industry tables. ![]() These tables can be used to calculate economy-wide gross domestic product (GDP) either directly, by summing value added over the industries, or indirectly, by summing to the economy-wide cost of primary inputs (income-based GDP) or by computing the grand total of the flow of products into final use categories (expenditure-based GDP) - the link to the national income and expenditure accounts. The system provides a measure of gross value added by industry - total output less intermediate inputs. The supply and use tables trace the production of products by domestic industries, combined with imports, through their use as intermediate inputs or as final consumption, investment or exports. The framework consists of the supply and use tables, the industry by industry input-output tables and a number of derived products. The input-output accounts focus on measuring the productive structure of the Canadian economy. The supply and use tables provide the basic information for the derivation of industry-by-industry input-output tables. ![]() The system provides measures of value added by industry and total GDP. The supply and use tables trace the production of commodities by domestic industries, combined with imports, through their uses by industries or as final consumption, investment or exports.
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