Board of Governors of the Federal Reserve System (U.S.), 1935-. "Output, Capacity, and Capacity Utilization," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1993," Annual Statistical Digest (November 1994) : 152-153. https://fraser.stlouisfed.org/title/7/item/23499/toc/428214 , accessed on April 16, 2024.