Year	current US$
1990	192212445.414431
1991	131012672.388928
1992	187479717.847291
1993	103201320.900807
1994	124367515.644695
1995	113962332.051594
1996	102347838.822048
1997	181038781.16715
1998	186349115.942536
1999	157178301.911353
2000	73542707.7076287
2001	183326538.52252
2002	87137807.1379311
2003	357267896.764469
2004	383022908.532032
2005	422543458.802823
2006	606085539.341004
2007	528282347.961074
2008	343097191.905536
2009	555542251.909829
2010	392006253.135703
2011	583168799.017347
2012	407848438.930103
2013	691819899.666255
2014	1020948617.84542
2015	796158113.830649
2016	936372249.731399
2017	939877114.064808
2018	1208233862.08479
2019	1114720697.10283
2020	979784263.719501