Source: Board of Governors of the Federal Reserve System (US)
Release: H.15 Selected Interest Rates
Averages of business days. For information on the break in this series from January 1987 through September 1993, please refer to the H.15 Statistical Release .
For further information regarding treasury constant maturity data, please refer to the H.15 Statistical Release notes and the Treasury Yield Curve Methodology.
Board of Governors of the Federal Reserve System (US), Market Yield on U.S. Treasury Securities at 20-Year Constant Maturity, Quoted on an Investment Basis [GS20], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/GS20, May 28, 2023.