![U.S. flag](https://www.dol.gov/themes/opa_theme/img/flag-favicon-57.png)
An official website of the United States government
The weak U. S. economy had a pervasive effect on price movements in 1991. Energy indexes plummeted at all stages of processing, after increasing sharply in the previous 2 years. This article summarizes changes in producer price indexes during 1991.
Download PDF »