Year	current US$
1991	15369999.8855591
1992	104370002.746582
1993	42310001.373291
1994	43810001.373291
1995	58049999.237060495
1996	65819998.979568526
1997	110570004.82082367
1998	128509996.74201012
1999	144700004.2200088
2000	120800003.40938568
2001	122460000.84280974
2002	91859999.77588652
2003	113090003.22222713
2004	205879993.43872046
2021	50000.0007450581