Year	US Dollars adjusted for inflation)
1950	1144
1951	1063
1952	1010
1953	893.3
1954	947.4
1955	850.1
1956	861.7
1957	938.5
1958	926.3
1959	994.1
1960	1086
1961	1108
1962	1150
1963	1206
1964	1249
1965	1311
1966	1408
1967	1474
1968	1553
1969	1609
1970	1748
1971	1848
1972	1833
1973	1939
1974	1993
1975	2068
1976	2233
1977	2409
1978	2652
1979	2639
1980	2742
1981	2917
1982	3055
1983	3047
1984	3206
1985	3393
1986	3495
1987	3673
1988	3950
1989	4319
1990	4845
1991	5196
1992	5578
1993	5922
1994	6331
1995	6680
1996	6915
1997	6773
1998	6159
1999	6383
2000	6474
2001	6638
2002	6883
2003	7275