Year	constant 2010 US$
1970	336.272605853607
1971	330.180572916802
1972	321.538628783864
1973	320.525856795775
1974	315.453362974909
1975	300.167445535347
1976	347.497070161014
1977	343.14042549986
1978	362.354426013768
1979	392.617690300341
1980	414.529693881556
1981	424.215733762415
1982	418.554574367484
1983	427.494861789672
1984	394.042658821011
1985	393.376151045968
1986	395.575862088701
1987	375.660208405553
1988	375.670853247836
1989	366.254548107732
1990	356.703149037057
1991	357.324311452802
1992	400.153370698004
1993	392.533074961326
1994	206.523192148626
1995	286.268773547689
1996	309.563855084508
1997	330.290620162645
1998	331.314065430178
1999	321.258786935114
2000	328.337198084772
2001	341.802858583117
2002	378.78132547515
2003	379.592334058783
2004	402.12928990054
2005	434.13971327455
2006	463.860897847659
2007	489.542236215849
2008	528.611073747444
2009	546.904142870238
2010	571.778797845957
2011	600.290656318342
2012	634.556491174385
2013	645.233219621681
2014	674.126433917241
2015	713.830903101277
2016	736.144146064368
2017	762.55482639345
2018	807.902997029684