Year	constant 2010 US$
1960	17097663462.0368
1961	18662182073.3949
1962	18761837699.3762
1963	18203964731.4718
1964	19308310652.922
1965	21325512635.7994
1966	22166540128.2953
1967	21893524445.107
1968	20758127880.272
1969	23390580901.4621
1970	24701021244.9591
1971	25599698069.7121
1972	27278142110.2426
1973	29598697853.8211
1974	30540182196.08
1975	32365234726.222
1976	29997131085.1237
1977	28975562371.9401
1978	26756113456.2383
1979	27839909722.73
1980	30845845586.5732
1981	31657717778.2679
1982	33604621728.9876
1983	34976725465.6853
1984	34758195430.4004
1985	36489218194.7478
1986	37187189883.2032
1987	39298322466.5006
1988	43545751697.7647
1989	48655381250.0618
1990	46911114241.1516
1991	38977811748.0828
1992	33617865973.5503
1993	29412818324.8869
1994	29660485698.2098
1995	33379469571.4214
1996	36720992474.5954
1997	40718105483.6241
1998	45063542124.6523
1999	47103155787.3111
2000	50031458260.1283
2001	50910876099.0928
2002	49406329916.7679
2003	50790353473.5721
2004	53158424401.3863
2005	54885473892.3649
2006	55603311947.6643
2007	61150001570.5311
2008	61318203476.4776
2009	53624621809.994
2010	54212666268.5788
2011	56433726081.7468
2012	55337102631.9536
2013	52604814978.6646
2014	51248604335.4422
2015	51622092032.1109
2016	56050967413.8842
2017	58944834850.8383
2018	60743403262.4556