Year	constant 2011 international $
1990	4230307055.87765
1991	4845902632.60631
1992	4680328184.7305
1993	4670605459.05803
1994	4699599866.93834
1995	4842886198.06589
1996	5359894432.90085
1997	5760046409.09439
1998	5970957027.97573
1999	6051458892.47242
2000	6402509009.31653
2001	6978819232.91193
2002	6876663055.83135
2003	7447851539.71795
2004	7589479722.84059
2005	7649342821.45445
2006	8314622043.49567
2007	8822823234.3961
2008	9950998420.1165
2009	11334836565.0532
2010	10708224072.4417
2011	11658610935.6783
2012	12777414584.0955
2013	13985484447.1343
2014	14945850034.8523
2015	16864147745.1599
2016	18088047855.6005
2017	17486535114.2052
2018	17922394989.6339