Year	constant 2011 international $
1990	4449.11228596082
1991	4558.95085379144
1992	4651.72475065003
1993	4707.3800375416
1994	4766.59251588973
1995	4833.85818480003
1996	5012.20245002519
1997	5131.49497691264
1998	5132.6375173584
1999	5162.90921581449
2000	5298.14557858475
2001	5290.77192733475
2002	5319.22293192399
2003	5519.26325991117
2004	5786.73406665831
2005	6048.24187027958
2006	6322.6528570579
2007	6602.34755711587
2008	6733.95878881451
2009	6757.92991844853
2010	7083.88081972005
2011	7311.73633196292
2012	7519.09211996624
2013	7748.80729746692
2014	7992.5883886436
2015	8277.54581203502
2016	8608.05367391748
2017	8922.22104180839
2018	9220.46803141412