90 3 国民経済計算(intermediate demand sector and intermediate input sector) in mind. Regardless of whether the sector is endogenous or exogenous (final demand sector and gross value added sector), the vertical breakdown of the column sector is called the "input", and the horizontal breakdown of the row sector is called the "output". An input-output table is a processing statistic created using various information such as the transaction status between all industries. As such, the input-output table has the following characteristics. <1> Comprehensive understanding of Japan's economic structure is possible. <2> By compiling various primary statistics with different purposes into an input-output table, inter-industry interrelationships and various comparisons that cannot be seen by simply comparing primary statistics alone become possible. The main constituent of the input-output tables are the basic transaction table, input coefficient table, and inverse matrix coefficient table. The basic transaction table shows matrix representations of the values of goods and services transacted between industries, etc. or between industry and final demand (households, etc.), while the input coefficient table is obtained by dividing the value of raw materials inputted, etc. for each industry in a column of the basic transaction table by the value of production of the industry columns, indicating the quantity of raw materials, etc. necessary for the production of one unit in each industry. The inverse matrix coefficient tables show the ripple effect produced directly or indirectly by one unit of final demand in a certain industry on the production of each industrial sector. While the transaction table is by itself able to make clear the structure of industries, the input-output table is widely utilised for making economic forecasts and for economic planning, etc. by input-output analysis using the input coefficient table and the inverse matrix coefficient table. In the input-output tables for 2015, for endogenous sector, basic transaction tables for basic classifications (509 rows by 391 columns), various coefficient tables for integrated minor classifications (187 sectors), and various supplementary tables. However, presented in this Yearbook are the transaction table and the input coefficient table which are based on the aggregated classification of 13 by 13 sectors.
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