Year	US Dollars adjusted for inflation)
1960	1933
1961	1918
1962	1927
1963	1946
1964	1984
1965	1981
1966	2003
1967	1798
1968	1853
1969	1966
1970	1949
1971	1895
1972	1897
1973	1942
1974	2010
1975	1989
1976	2009
1977	2056
1978	2068
1979	2216
1980	2372
1981	2603
1982	3088
1983	3274
1984	3302
1985	3537
1986	3506
1987	3104
1988	2975
1989	2702
1990	2696
1991	2538
1992	2393
1993	2286
1994	2151
1995	2128
1996	2150
1997	2281
1998	2353
1999	2396
2000	2472
2001	2516
2002	2618
2003	2713