Year	US Dollars adjusted for inflation)
1950	8246
1951	8590
1952	8564
1953	8956
1954	9223
1955	9515
1956	9594
1957	9701
1958	9700
1959	9968
1960	10350
1961	10500
1962	10580
1963	10910
1964	11370
1965	11590
1966	11740
1967	11990
1968	12370
1969	12550
1970	12820
1971	13130
1972	13530
1973	14510
1974	14370
1975	14260
1976	14710
1977	14820
1978	15330
1979	15750
1980	15470
1981	15310
1982	15520
1983	16060
1984	16430
1985	16970
1986	17630
1987	18400
1988	19380
1989	19780
1990	19860
1991	19530
1992	19540
1993	19960
1994	20760
1995	21270
1996	21810
1997	22470
1998	23180
1999	23800
2000	24670
2001	25130
2002	25520
2003	26040
2004	26760