Year	current US$
1975	54000000
1976	65000000
1977	49000000
1978	62000000
1979	62890000
1980	54560000
1981	56930000
1982	55820000
1983	168030000
1984	159420000
1985	1505520000
1986	2055870000
1987	2145550000.0000002
1988	5000290000
1989	13998180000
1990	11894040000
1991	10036490000
1992	15204790000
1993	20028360000
1994	25793870000
1995	26206400000
1996	33809000000
1997	43861170000
1998	67133470000
1999	55562340000
2000	89909810000
2001	66026060000
2002	32507890000
2003	43877390000
2004	68190070000.00001