Producer Price Index PPI
Around the middle of each month the Bureau of Labor Statistics (BLS) at the United States Department of Labor release the Producer Price Index figure. The data release is for the previous month. January's figure is release in February. This figure can be revised.
A Producer Price Index (PPI) measures average changes in prices received by domestic producers for their output. It is one of several price indexes.
Due to the shift in spending away from spending on manufactured goods (as a share of total spending), the importance of the PPI has been declining.
In the United States the PPI was previous know as the Wholesale Price Index (WPI) until 1978. This is one of the oldest systems of statistical data that has been published by the BLS.