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Title:               Market Yield on U.S. Treasury Securities at 20-Year Constant Maturity, Quoted on an Investment Basis
Series ID:           RIFLGFCY20NA
Source:              Board of Governors of the Federal Reserve System (US)
Release:             H.15 Selected Interest Rates
Seasonal Adjustment: Not Seasonally Adjusted
Frequency:           Annual
Units:               Percent
Date Range:          1962-01-01 to 2023-01-01
Last Updated:        2024-01-02 3:25 PM CST
Notes:               Averages of daily figures.
                     
                     For further information regarding treasury constant maturity data,
                     please refer to the H.15 Statistical release notes
                     (https://www.federalreserve.gov/releases/h15/default.htm) and the
                     Treasury Yield Curve Methodology
                     (https://home.treasury.gov/policy-issues/financing-the-government/interest-rate-statistics/treasury-yield-curve-methodology).

DATE        VALUE
1962-01-01   3.99
1963-01-01   4.05
1964-01-01   4.19
1965-01-01   4.27
1966-01-01   4.77
1967-01-01   5.01
1968-01-01   5.45
1969-01-01   6.32
1970-01-01   6.87
1971-01-01   6.12
1972-01-01   6.01
1973-01-01   7.12
1974-01-01   8.06
1975-01-01   8.20
1976-01-01   7.86
1977-01-01   7.67
1978-01-01   8.48
1979-01-01   9.32
1980-01-01  11.36
1981-01-01  13.72
1982-01-01  12.92
1983-01-01  11.34
1984-01-01  12.49
1985-01-01  10.97
1986-01-01   7.84
1987-01-01      .
1988-01-01      .
1989-01-01      .
1990-01-01      .
1991-01-01      .
1992-01-01      .
1993-01-01   6.29
1994-01-01   7.49
1995-01-01   6.95
1996-01-01   6.83
1997-01-01   6.69
1998-01-01   5.72
1999-01-01   6.20
2000-01-01   6.23
2001-01-01   5.63
2002-01-01   5.43
2003-01-01   4.96
2004-01-01   5.04
2005-01-01   4.64
2006-01-01   5.00
2007-01-01   4.91
2008-01-01   4.36
2009-01-01   4.11
2010-01-01   4.03
2011-01-01   3.62
2012-01-01   2.54
2013-01-01   3.12
2014-01-01   3.07
2015-01-01   2.55
2016-01-01   2.22
2017-01-01   2.65
2018-01-01   3.02
2019-01-01   2.40
2020-01-01   1.35
2021-01-01   1.98
2022-01-01   3.30
2023-01-01   4.26