Year	current US$
1980	1204468582.3418
1981	1124846843.94811
1982	1125801787.40968
1983	1168750596.54315
1984	1206592741.53774
1985	1302219261.09333
1986	1997146841.57088
1987	2425764212.64225
1988	2468458766.02917
1989	2473342966.80653
1990	3005778319.6048
1991	3088294939.30507
1992	4266060415.2517
1993	4098775036.20239
1994	4253062817.20205
1995	4846872988.47584
1996	4835653252.63385
1997	4288754494.82526
1998	4385278566.24967
1999	4350622277.50998
2000	3953271930.24712