Year	constant 2021 US$
1990	2707800064.08691
1991	6484539993.28613
1992	3562980003.35693
1993	2576170043.94531
1994	3950970085.1440396
1995	5492349746.7041
1996	2854070026.63612
1997	4560949966.72869
1998	5577809963.76276
1999	5970190005.89848
2000	7588820056.23356
2001	6480390008.69542
2002	5706110054.241489
2003	5851650093.3729105
2004	6746130003.54171