Year	constant 2011 international $
1990	3702.60174413553
1991	3816.10061656015
1992	3797.96919783072
1993	3877.84125384053
1994	3975.14961189305
1995	4076.20422429133
1996	4168.16708342386
1997	4287.48107130384
1998	4414.51527041023
1999	4347.28987161212
2000	4370.97939244791
2001	4360.67669966251
2002	4385.95864096695
2003	4422.42126647315
2004	4524.06981166348
2005	4640.55616316529
2006	4778.7213936392
2007	4911.63309805467
2008	5126.19962688807
2009	5210.74222054361
2010	5337.32562765861
2011	5524.71779777384
2012	5715.52484798514
2013	6008.59258421997
2014	6239.5482959879
2015	6444.37511535808
2016	6620.43801753902
2017	6798.9293493876
2018	6986.04648747244