Year	current US$
1990	3040000000
1991	2950000000
1992	3200000000
1993	3203492063.4920635
1994	2652334801.7621145
1995	2500649115.793882
1996	2396081798.6494784
1997	2534885957.2412715
1998	2638329137.9162683
1999	2444986271.7089677
2000	2727383250.3866487
2001	3429772727.495542
2002	4339729122.087883
2003	5899440592.863898
2004	6731351088.466884
2005	7541355716.878403
2006	9650674364.896074
2007	12299718574.108818
2008	18235683677.444485
2009	18957543859.64912
2010	20689157894.736843
2011	26406333333.333332
2012	31835210526.31579
2013	35782543859.649124
2014	39603210526.31579
2015	33705628571.42857
2016	35225885714.28571
2017	36352285714.28571
2018	39048469257.14286
2019	44588356857.14286
2020	45566594285.71429
2021	49698385714.28571
2022	55770840771.42857
2023	59381872960.89629