Year	constant 2011 international $
1990	5897.86889758915
1991	5830.25377634381
1992	5962.05569479849
1993	6010.63949696725
1994	6125.15600959817
1995	6282.19251872806
1996	6464.14247806121
1997	6683.54966283873
1998	6916.77308555825
1999	7192.56779139259
2000	7504.4625312745
2001	7623.44564308409
2002	7660.17484875027
2003	7759.23637776372
2004	7930.18378632738
2005	8136.54463130839
2006	8540.71876979869
2007	8987.25309570762
2008	9460.62610462765
2009	9719.85415855944
2010	10019.3097059847
2011	9982.84570166468
2012	9981.55196131653
2013	9970.97576566922
2014	10032.4820518735
2015	10242.534355286
2016	10460.9064179981
2017	10672.8002220182
2018	11013.7354927259