Year	US Dollars adjusted for inflation)
1960	1023
1961	969.3
1962	1062
1963	922
1964	813.6
1965	855.8
1966	890.5
1967	922
1968	935.5
1969	1010
1970	1057
1971	1023
1972	993.6
1973	1019
1974	985.2
1975	925
1976	1089
1977	1075
1978	1147
1979	1246
1980	1255
1981	1339
1982	1290
1983	1344
1984	1191
1985	1215
1986	1258
1987	1228
1988	1189
1989	1218
1990	1006
1991	1017
1992	1040
1993	901.3
1994	521.8
1995	840.8
1996	927.8
1997	858.9
1998	943.2
1999	975.3
2000	1018
2001	1072
2002	1149
2003	1297