Year	current US$
1990	587500000
1991	408333333.3333334
1992	330625000
1993	265833333.3333333
1994	202895104.8951049
1995	338477366.255144
1996	409536454.87561995
1997	219040760.47817943
1998	212054818.26761946
1999	196366385.21954155
2000	246908871.43419984
2001	256181816.30525655
2002	261042593.85112926
2003	261575175.72118905
2004	322037831.3761339
2005	393788902.9604416
2006	652794692.2887263
2007	936232698.7939868
2008	1376444609.4162853
2009	1323139033.679479
2010	1331140731.2738042
2011	1468328392.9548998
2012	2073447085.7553806
2013	2168200009.8311124
2014	2426463250.925028
2015	2176284709.7708936
2016	2166205009.4468827
2017	2423786497.119332
2018	2617842276.1544394
2019	2812136849.1343856
2020	2145148522.2017555
2021	2232694526.5252743
2022	2606117873.143762