Release: H.4.1 Factors Affecting Reserve Balances (data not included in press release)
Data prior to 1991 are from various issues of Banking and Monetary Statistics and the Annual Statistical Digest. Data from 1991 forward are calculated using data from the H.4.1 Release - Factors Affecting Reserve Balances.
As of March 1, 2019, this series is calculated as a monthly average of fred.stlouisfed.org/series/WCURCIR.
Board of Governors of the Federal Reserve System (US), Currency in Circulation [CURRCIR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CURRCIR, March 19, 2019.