Effective Interest Rates, 1940-79

Historical document

Estimated effective interest rates earned by the Old-Age and Survivors Insurance (OASI) and Disability Insurance (DI) Trust Funds are shown below for 1940-1979. (OASDI refers to the two funds combined.)

Estimated Effective Interest Rates Earned By the
Assets of the OASI and DI Trust Funds, 1940-79
[Percent]

Calendar year	OASI	DI	OASDI	Calendar year	OASI	DI	OASDI

1940............	2.4	--	2.4	1960............	2.6	2.6	2.6
1941............	2.4	--	2.4	1961............	2.7	2.9	2.8
1942............	2.3	--	2.3	1962............	2.8	2.9	2.8
1943............	2.1	--	2.1	1963............	2.9	3.0	2.9
1944............	2.0	--	2.0	1964............	3.1	3.2	3.1
1945............	2.1	--	2.1	1965............	3.2	3.4	3.2
1946............	2.0	--	2.0	1966............	3.5	3.7	3.5
1947............	1.9	--	1.9	1967............	3.7	4.1	3.8
1948............	2.8	--	2.8	1968............	3.9	4.4	4.0
1949............	1.3	--	1.3	1969............	4.4	5.1	4.4
1950............	2.0	--	2.0	1970............	5.0	5.8	5.1
1951............	2.9	--	2.9	1971............	5.2	6.0	5.3
1952............	2.2	--	2.2	1972............	5.3	6.0	5.4
1953............	2.3	--	2.3	1973............	5.7	6.2	5.8
1954............	2.3	--	2.3	1974............	6.2	6.5	6.2
1955............	2.2	--	2.2	1975............	6.6	6.7	6.6
1956............	2.4	--	2.4	1976............	6.7	6.8	6.7
1957............	2.5	2.3	2.5	1977............	6.9	7.1	7.0
1958............	2.5	2.4	2.5	1978............	7.2	7.5	7.2
1959............	2.6	2.5	2.6	1979............	7.4	8.0	7.5

OASI refers to the Old-Age and Survivors Insurance Trust Fund, DI refers to the Disability Insurance Trust Fund, and OASDI refers to the two funds combined


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