Year	current US$
1970	25419999.599456802
1971	22020000.934600793
1972	22340000.15258786
1973	35569999.69482425
1974	42780000.6866455
1975	64800001.144409195
1976	86459999.0844726
1977	126180002.2125244
1978	87139999.3896485
1979	81709999.0844726
1980	68610000.6103516
1981	93180000.30517581
1982	55959999.0844727
1983	62599998.47412111
1984	28229999.5422363
1985	55190000.5340577
1986	41809999.465942346
1987	39889999.747276284
1988	41379999.16076665
1989	35530001.640319824
1990	43740000.247955345
1991	61559997.558593705
1992	30810000.1905113
1993	71809999.9427795
1994	228050004.9591061
1995	136460000.03814697
1996	310259992.5994876
1997	159370002.746582
1998	101010000.2288818
1999	104620000.8392333
2000	147560003.2806397
2001	239389994.85969573
2002	194400004.3869022
2003	120400001.52587901
2004	119660003.662109
2005	123459999.084473
2006	196509994.506836
2007	162910003.66210902
2008	241059997.55859402
2009	168830001.831055
2010	131550003.051758