Year	US Dollars adjusted for inflation)
1970	1982
1971	2040
1972	2015
1973	2124
1974	2009
1975	1606
1976	1689
1977	1653
1978	1754
1979	1778
1980	1693
1981	1739
1982	1824
1983	1607
1984	1674
1985	1631
1986	1515
1987	1426
1988	1340
1989	959
1990	551.6
1991	547.6
1992	338.8
1993	218.5
1994	171.4
1995	170.6
1996	187
1997	332.2
1998	372.6
1999	408.8
2000	472.4
2001	486.8
2002	494.1
2003	342.5