Year	constant 2011 international $
1990	3650.55632919843
1991	3540.62626338013
1992	3501.66679058325
1993	3609.70260818392
1994	3485.09547626487
1995	3687.94628582112
1996	3927.0464381171
1997	3931.5725795327
1998	3999.9432361181
1999	4069.23107231614
2000	4329.69887039653
2001	4605.40759026015
2002	4777.81688983719
2003	4963.25654162566
2004	5160.64842685422
2005	5341.14576433659
2006	5411.7054734478
2007	5716.88841749932
2008	5736.22937373426
2009	5422.16015833689
2010	5407.32724564243
2011	5673.41593079322
2012	5647.45696951926
2013	5490.9384935286
2014	5524.07062946917
2015	5566.81152765364
2016	5934.57743197833
2017	6069.6047845812
2018	6089.30326427068