Year	constant 2011 international $
1990	3577.35327917963
1991	3799.76391738466
1992	3803.22939122413
1993	3938.87233904478
1994	4126.08740800514
1995	4268.67552463074
1996	4255.94149649858
1997	4235.12058711958
1998	4331.74942521121
1999	4479.12255933592
2000	4606.85786176294
2001	4747.87814648915
2002	4883.67320776315
2003	4958.25845586292
2004	4909.82389935742
2005	4953.54872661738
2006	4874.61940137184
2007	4631.70606229816
2008	4738.40561989392
2009	4823.10365146103
2010	4991.43126955853
2011	5151.45482498474
2012	5239.05497261333
2013	5123.89261943282
2014	5268.39964669234
2015	5477.34595519659
2016	5642.74289258856
2017	5745.95129231921
2018	5696.22921726132