The industrial production (IP) index measures the real output of all relevant establishments located in the United States, regardless of their ownership, but not those located in U.S. territories.
For more information, see the explanatory notes issued by the Board of Governors. For recent updates, see the announcements issued by the Board of Governors
Source Code: IP.N2121.N.Q
Board of Governors of the Federal Reserve System (US), Industrial Production: Mining, Quarrying, and Oil and Gas Extraction: Coal Mining (NAICS = 2121) [IPN2121NQ], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/IPN2121NQ, January 27, 2023.