Year	current US$
1990	8299256578.90556
1991	11276866215.157
1992	16242281374.6437
1993	22523168446.4712
1994	22412965243.422
1995	19840156595.8334
1996	24337704766.949
1997	22555552119.1614
1998	23638980579.6919
1999	12575910723.3591
2000	12850375650.7287
2001	12600357773.5723
2002	5305554014.22747
2003	10624082995.4705
2004	2049213941.25387
2005	2780080927.77127
2006	22623829396.641
2007	34230349386.3627
2008	39290028580.9156
2009	27641823084.6028
2010	31599458896.2747
2011	39196120334.4232
2012	31904883701.9809
2013	26418487752.9677
2014	26434521184.7628
2015	32977517501.9592
2016	30915834658.8448
2017	35483431846.3074
2018	11304263719.818
2019	15535574715.83
2020	29856951230.7239
2021	56117225677.7294