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U.S. Producer Price Index : ウィキペディア英語版 | U.S. Producer Price Index The official measure of producer prices in the US is called the Producer Price Index (PPI). It measures average changes in prices received by domestic producers for their output. The PPI was known as the Wholesale Price Index, or WPI, up to 1978. The PPI is one of the oldest continuous systems of statistical data published by the Bureau of Labor Statistics, as well as one of the oldest economic time series compiled by the Federal Government.〔BLS Handbook of Methods, Chapter 14 Producer Prices, Background (found online at:http://www.bls.gov/opub/hom/homch14_a.htm)〕 The origins of the index can be found in an 1891 U.S. Senate resolution authorizing the Senate Committee on Finance to investigate the effects of the tariff laws “upon the imports and exports, the growth, development, production, and prices of agricultural and manufactured articles at home and abroad.”〔Senate Committee on Finance, Wholesale Prices, Wages, and Transportation, Senate Report No. 1394, “The Aldrich Report,” Part I, 52nd Congress, 2d sess., March 3, 1893; and U.S. Department of Labor, Course of Wholesale Prices, 1890–1901, Bulletin No. 39, March 1902, pp. 205–09.〕 ==Scope of the Producer Price Index==
Most of the data is collected through a systematic sampling of producers in manufacturing, mining, and service industries, and is published monthly by the Bureau of Labor Statistics. Virtually every type of mining and manufacturing industry is currently sampled in the PPI; and a majority of service industries are sampled, with more being constantly added.
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