Year	constant 2010 US$
1980	275.549336267306
1981	298.441430989759
1982	286.681383018326
1983	317.236852079803
1984	288.826159144534
1985	275.75621892415
1986	282.228396015
1987	251.670518880059
1988	260.562886412314
1989	249.043513295636
1990	247.31041353239
1991	269.23362394284
1992	291.705867793718
1993	294.622906293721
1994	123.425838586646
1995	194.464900805621
1996	205.923651061972
1997	237.43132081477
1998	236.962026747319
1999	271.072136551464
2000	292.208775445717
2001	296.229368466855
2002	321.068722145265
2003	298.928551323674
2004	330.459164214977
2005	362.943879762611
2006	414.509744880368
2007	428.315004721657
2008	417.81851516065
2009	449.43616071254
2010	467.437429959765
2011	498.521439884507
2012	525.140918512422
2013	535.18079660924
2014	565.231021474544
2015	605.963805606016
2016	635.554564536301
2017	666.020073336521