Year	constant 2021 US$
1990	574089988.7084961
1991	2624860023.0217
1992	1960129989.624024
1993	1386529998.7792978
1994	1400030006.40869
1995	917699996.9482429
1996	1460229993.8201919
1997	1351310004.9495707
1998	2256859991.788865
1999	2356379990.1008606
2000	2505659964.531661
2001	2730279960.4050817
2002	1878660035.8486183
2003	1787049996.2866309
2004	2203729997.9925165
2011	250000