Year	constant 2010 US$
1990	3922806202.28399
1991	3806351085.4053
1992	3712314390.84
1993	3691752565.77628
1994	3711571749.91149
1995	3775763630.62891
1996	3796093380.40247
1997	3654667018.09024
1998	3786253410.92192
1999	4025104761.96414
2000	4058401421.88801
2001	3987758232.94431
2002	3987466820.68328
2003	3868934883.51098
2004	4057211488.48882
2005	4177151918.25609
2006	4365938494.69073
2007	4926858528.4555
2008	5118874924.11652
2009	4941817691.18817
2010	5182767062.34646
2011	4941137729.24578
2012	5130701405.04315
2013	5265552428.83291
2014	5464077031.65684
2015	5729092198.70485
2016	5997507175.46483
2017	6174078721.29147
2018	6376197408.66805