The system of national accounts includes an integrated set of supply and use tables (matrices), as well as symmetric input-output tables (matrices). These tables provide detailed analyses of the process of production and the use of goods and services. The concepts applied in the compilation of the use-supply and output-input tables are the same as in the rest of the system.
In complement to the full sequence of accounts for institutional sectors, covering all kinds of transactions and flows, the supply-use and the input-output tables serve to provide a detailed basis for analyzing industries and products. These tables serve two purposes;
(i) Statistical; they provide a framework for checking the consistency of statistics on flows on goods and services obtained from different sources (industrial surveys, household expenditure surveys, investment surveys, government accounts and foreign trade statistics etc.), and the method of commodity flows are often used to make the sources match, and
(ii) Analytical; Supply-use and input-output tables are conveniently integrated into macro-economics models to analyze the links between final demands and industrial output levels.
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