Year	current US$
1961	172592027.61472443
1962	181216028.99456462
1963	183456029.3529647
1964	196448031.43168503
1965	220640035.30240566
1966	254688040.75008652
1967	289632158.34114534
1968	321216163.39458615
1969	363887834.22205347
1970	410816177.73058844
1971	449953328.09218377
1972	500215918.05891705
1973	620637993.2794974
1974	694019802.8897635
1975	728112314.159182
1976	788464279.4526284
1977	875780886.7234094
1978	1088690764.18521
1979	1251270026.146564
1980	1566892119.4850254
1981	1640793530.737763
1982	1513965587.7517748
1983	1653299782.5738568
1984	1619828346.0500894
1985	1623990067.1189249
1986	1722746429.4317355
1987	1999121157.7499259
1988	2213936172.298579
1989	2284474677.9506683
1990	1901044773.9323566
1991	2228256302.521009
1992	2222371967.6549864
1993	2090760425.1839738
1994	2545482686.5671644
1995	2023276979.4940877
1996	2389061684.370258
1997	2989914929.223904
1998	2228623755.645122
1999	1962891374.556912
2000	1570701786.7476852
2001	1470608155.7656403
2002	1816755494.3640947
2003	1748184708.8949544
2004	2020316385.7590714