Year	current US$
1966	17200000.762939498
1967	11609999.6566772
1968	15810000.4196167
1969	16500000
1970	22870000.8392334
1971	38229999.5422363
1972	54959999.0844727
1973	74639999.3896484
1974	62049999.237060495
1975	64709999.0844727
1976	46490001.6784668
1977	78059997.55859381
1978	115010002.13623
1979	148649993.89648402
1980	197970001.220703
1981	150169998.168945
1982	158660003.66210902
1983	181899993.89648402
1984	130509994.506836
1985	145369995.117188
1986	206589996.33789098
1987	282630004.88281304
1988	261100006.103516
1989	281600006.10351604
1990	302410003.66210896
1991	310679992.675781
1992	357980010.986328
1993	394730010.986328
1994	408429992.675781
1995	451209991.455078
1996	396140014.64843804
1997	338820007.324219
1998	338390014.64843804
1999	314510009.765625
2000	350170013.42773396
2001	294149993.89648396
2002	323829986.57226604
2003	453899993.89648396
2004	524340026.855469