us census bureau the official statistics tm statistical abstract of united states 1998 sep 25 section 15 prices this presents indexes producer and consumer actual for se lected commodities energy primary sources these data are monthly publications department labor bls which include review con sumer price index detailed report pro ducer import export commerce economic analysis is source gross domestic product measures ppi dating from 1890 oldest tinuous series published by it designed to measure average changes in received producers all at stages proces sing produced has undergone several re visions see febru ary 1962 april 1978 august 1988 now based on approximately 3 200 commodity 80 000 quota tions per month net output manufacturing mining industries have been added recent years used constructing col
