Year	current US$
1985	445953606.187864
1986	847732695.534022
1987	1197699650.19938
1988	832492179.985425
1989	217239318.73501
1990	220286927.875788
1991	309971563.352518
1992	304120242.500585
1993	387041767.655016
1994	500031008.590455
1995	665885183.441508
1996	806546964.283499
1997	971543906.72922
1998	1152586421.16216
1999	1507634523.6048
2000	1924995201.90947
2001	2444491747.39432
2002	3070407265.13287
2003	4130673175.38877
2004	5571500510.9227
2005	7858741638.53236
2006	9846208019.84863
2007	11536916584.5372
2008	15506404811.1171
2009	17864214131.3049
2010	23732839368.9402
2011	27164579908.1697
2012	29562742960.8927
2013	31051989772.2997
2014	32209003402.3261
2015	31768964614.6238
2016	34093652625.6144
2017	36160260789.4838
2018	40473039727.2666
2019	44883910658.0019
2020	46716186746.2396
2021	49545696713.6169