The rates of return shown below represent the change in asset value for the retirement funds managed by the Washington State Investment Board as the Commingled Trust Fund (CTF).

Rates of return for years prior to 1982 are simulated based on the fund's 2004 asset allocation strategy and the historical performance of selected economic indicators. See Table B for more information. Rates of return for 1993 and beyond have been restated to match the Washington State Investment Board's (WSIB) reported returns.

Investment Returns of the Commingled Trust Funds1
Year ROR Year ROR Year ROR
1926 8.19% 1956 1.45% 1986 26.90%
1927 24.03% 1957 -4.44% 1987 16.90%
1928 27.35% 1958 29.44% 1988 4.20%
1929 -11.37% 1959 7.69% 1989 13.50%
1930 -15.60% 1960 3.88% 1990 8.30%
1931 -29.72% 1961 18.90% 1991 9.50%
1932 0.43% 1962 -3.29% 1992 8.20%
1933 51.03% 1963 15.12% 1993 13.07%
1934 7.87% 1964 13.11% 1994 2.10%
1935 31.46% 1965 12.87% 1995 16.24%
1936 29.26% 1966 -5.11% 1996 16.49%
1937 -25.42% 1967 22.62% 1997 20.18%
1938 22.05% 1968 11.63% 1998 17.12%
1939 1.70% 1969 -10.60% 1999 11.76%
1940 -3.62% 1970 4.52% 2000 13.56%
1941 -6.18% 1971 13.87% 2001 -6.75%
1942 18.00% 1972 11.88% 2002 -5.15%
1943 27.85% 1973 -11.99% 2003 3.02%
1944 19.61% 1974 -15.33% 2004 16.72%
1945 32.02% 1975 30.50% 2005 13.05%
1946 -5.39% 1976 27.27% 2006 16.70%
1947 1.87% 1977 1.20% 2007 21.33%
1948 3.57% 1978 6.77% 2008

-1.22%

1949 13.81% 1979 14.87% 2009

-22.84%

1950 21.58% 1980 20.45%
1951 11.15% 1981 0.22%
1952 9.83% 1982 2.50%
1953 -0.25% 1983 47.30%
1954 36.83% 1984 -0.03%
1955 17.84% 1985 29.80%
1 Returns are calculated for fiscal years ending June 30 as reported by the Department of Retirement Systems' Comprehensive Annual Financial Report. These results may differ from those reported for valuation years, which end September 30. Rates of return for 1993 and beyond have been restated to match the WSIB' reported returns.
2 Rates for years prior to 1982 are approximations. See Table B for more information.

Source: State Actuary