Year	constant 2011 international $
1990	11613.7735516237
1991	12687.232757344
1992	13326.0974284351
1993	14090.7800467566
1994	15212.7549650641
1995	16482.4270708927
1996	17572.8478355605
1997	18400.2871461397
1998	17120.5933861228
1999	18973.5052466338
2000	20600.737427615
2001	21377.3750584448
2002	22901.9505190312
2003	23456.5638957221
2004	24556.292226398
2005	25315.2861460922
2006	26599.985398761
2007	27931.6763375197
2008	28590.3643310219
2009	28579.1294155666
2010	30386.8360544423
2011	31412.4304290149
2012	32099.1336585194
2013	32781.468115514
2014	33533.9054566115
2015	34276.4414300531
2016	35121.6267183888
2017	35944.7094712359
2018	36757.0236330189