Year	US Dollars adjusted for inflation)
1950	7091
1951	7313
1952	6736
1953	6754
1954	6950
1955	7396
1956	7353
1957	7562
1958	7949
1959	7354
1960	7859
1961	8068
1962	7968
1963	7545
1964	8031
1965	8739
1966	8569
1967	8701
1968	9005
1969	9647
1970	9740
1971	9948
1972	9946
1973	10180
1974	10590
1975	10360
1976	10110
1977	10500
1978	10090
1979	10720
1980	10810
1981	10080
1982	9493
1983	9723
1984	9829
1985	8974
1986	9533
1987	9623
1988	9228
1989	8465
1990	8231
1991	9099
1992	10050
1993	10530
1994	10970
1995	10570
1996	10910
1997	11600
1998	11930
1999	11590
2000	11330
2001	10690
2002	9561
2003	10170
2004	10940