Year	constant 2010 US$
1995	5786376809.07086
1996	7493404445.7742
1997	9681142269.39221
1998	10303060207.8706
1999	8804937086.83122
2000	9385296175.18111
2001	11235838710.851
2002	13497386179.6472
2003	14792733426.7515
2004	17084128654.8641
2005	20559107983.029
2006	23490564042.9191
2007	26029634326.0164
2008	29201991009.7973
2009	21026367977.378
2010	24952274894.8246
2011	28696821484.4667
2012	30603713380.3804
2013	33392559652.9774
2014	34426527098.1508
2015	36772734691.9257
2016	38176609119.8078
2017	42765377895.5862
2018	44615840303.5764