Year	current US$
1990	1590258917.63774
1991	2766069707.19733
1992	3627341707.86932
1993	4022813091.43726
1994	4491283042.99928
1995	7461829330.55066
1996	8922599784.74781
1997	10136292282.2322
1998	9614668702.10481
1999	6970398953.98835
2000	6734060746.46441
2001	7245372233.81187
2002	7569325925.45201
2003	7782877023.79813
2004	7799468333.30518
2005	10660595308.0037
2006	10322083459.7131
2007	12020336537.8479
2008	11766393963.5908
2009	16454197857.0801
2010	23241421540.1713
2011	15155901455.8055
2012	25640907106.3098
2013	26504495119.4586
2014	24261667198.7963
2015	28973473240.465
2016	20784919261.2877
2017	17068967087.2782
2018	12920918454.8158
2019	18136040641.4219
2020	11282447480.889
2021	-10760647658.0426