Year	current US$
1972	91158465.08989571
1973	119465625.51850031
1974	154791529.71181944
1975	188679078.89710376
1976	215164016.47787964
1977	254080962.81977227
1978	303281046.74806947
1979	374478371.28547204
1980	465588448.7355872
1981	464170677.27205855
1982	413199033.62853163
1983	378799766.85499257
1984	355152967.5598953
1985	375749359.76014966
1986	456925433.6694294
1987	620304532.7040479
1988	831084794.355358
1989	938472921.0165166
1990	872243893.3280933
1991	916232353.8244773
1992	964287046.8722116
1993	916413639.4151257
1994	989665385.3767236
1995	1086183774.1730196
1996	1161808978.6091604
1997	1150309921.4427438
1998	1146643791.6451468
1999	1107439582.0871422
2000	1140084226.8755639
2001	1092761300.294802
2002	1061819076.8730854
2003	1160090944.8020232
2004	1464492510.110427
2005	1760590077.8018072
2006	1716598314.5058112
2007	1967921188.220587