Year	current US$
1970	62671693.333333336
1971	79751985.43346667
1972	95649384.13870075
1973	126347367.55103727
1974	153180429.539451
1975	190386481.50081792
1976	217060524.97715065
1977	254463691.98253193
1978	320919536.6865381
1979	379208501.569486
1980	428499796.4847757
1981	395459057.4934578
1982	375400152.8003435
1983	379333300.67429256
1984	351563525.9166336
1985	384564859.4351738
1986	553578597.0372977
1987	728913586.8995545
1988	831758034.0264649
1989	868241868.3547248
1990	946262441.10502
1991	946148634.1347039
1992	963365121.345073
1993	865523256.7733903
1994	950860868.6793221
1995	1159866891.976195
1996	1163024913.2904913
1997	1041871862.6309891
1998	1120011007.596525
1999	1102886368.5882366
2000	1043282168.4235737
2001	1057094010.3573104
2002	1138483294.0116642
2003	1389716824.1350172
2004	1599884628.038091
2005	1662189360.8541734
2006	1657465000.3749928
2007	2042179704.5796602