Year	current US$
1995	5036766463.702551
1996	5752056268.22158
1997	6155586489.245182
1998	6664996901.4703245
1999	6791530152.772245
2000	6065285980.73334
2001	6578585979.430023
2002	7254730716.629317
2003	10953671140.887226
2004	12779824312.753286
2005	15154918911.650885
2006	16744558599.822515
2007	19594211257.04661
2008	19633085774.42755
2009	18792918092.766083
2010	20591413797.91814
2011	22692777925.461277
2012	24547012649.689007
2013	24422598989.387604
2014	25662254621.647484
2015	23327315236.017967
2016	23856545203.25207
2017	27237089603.28712
2018	28982406494.88037
2019	28185250374.47286