Year	constant 2010 US$
1965	21401857.6562231
1966	19380869.0835437
1967	21142771.609802
1968	19173580.6779744
1969	18292629.4148452
1970	21920068.8859302
1971	27672150.9166956
1972	35186115.9052867
1973	41404572.3880424
1974	65449283.8336529
1975	89026368.4475925
1976	104517541.927564
1977	104676907.241918
1978	117458713.830403
1979	111561864.535935
1980	97250080.4832902
1981	117936829.341899
1982	131228647.98687
1983	127722415.386747
1984	116884967.389235
1985	126383660.645066
1986	151724154.554567
1987	191376432.516713
1988	251715459.337468
1989	281263420.626058
1990	290443363.684747
1991	314572610.758797
1992	324262546.30554
1993	296466742.46382
1994	306637337.418285
1995	359941747.573192
1996	434340927.972957
1997	518960759.377546
1998	543063138.993761
1999	548992374.044031
2000	543082707.42627
2001	548894531.881486
2002	556330536.23496
2003	500964278.620294
2004	500019005.919507
2005	509242312.624637
2006	611139054.386251
2007	768179952.053553
2008	748472094.462781
2009	785968342.099502
2010	816693638.130005
2011	909396151.877197
2012	943098765.345533
2013	1004718859.16893
2014	1009789822.76935
2015	1042488673.49213
2016	1058652198.74468
2017	1081782085.97049
2018	1120351466.44601