Year	constant 2021 US$
1991	6550000.19073486
1992	139330001.831055
1993	101160003.662109
1994	112250000
1995	236759994.506836
1996	125529998.77929701
1997	155559997.55859402
1998	199649993.89648402
1999	209380004.882813
2000	170580001.831055
2001	233470001.220703
2002	220589996.33789098
2003	507670013.42773396
2004	303760009.765625