Year	constant 2011 international $
1990	4708149637.83105
1991	5049226561.07483
1992	5313461633.45512
1993	4089091292.27056
1994	4364059970.42221
1995	4800668397.6079
1996	6140436652.15721
1997	6635259225.35313
1998	6926367510.20755
1999	7043479982.16545
2000	6879522631.5744
2001	7164671214.41669
2002	6947174227.49523
2003	7469553162.80555
2004	7175542908.31687
2005	6105903330.43661
2006	6042844492.13206
2007	6487941801.82892
2008	6184362847.35132
2009	6533900467.91632
2010	6423018762.20422
2011	6521527619.90404
2012	8397882651.32979
2013	10337173847.0689
2014	10783751547.9453
2015	11774743783.4226
2016	12591286451.4678
2017	12806456420.8942
2018	13303487726.4369