Year	constant 2010 US$
1960	13060849359.2411
1961	13303278124.6263
1962	14212385243.0477
1963	15666957835.3589
1964	17394263164.615
1965	19242782876.5638
1966	21240744545.6065
1967	21720820799.7923
1968	23291378441.4753
1969	25391642890.4183
1970	29390449722.9177
1971	31238380096.2324
1972	35032673260.4341
1973	38379377179.6386
1974	41029625081.7356
1975	39122263809.7946
1976	45936390818.3138
1977	49814069481.3974
1978	49311794353.2735
1979	54364227443.4445
1980	57467178590.6916
1981	57118736555.1457
1982	55045930431.6488
1983	57345149035.0245
1984	61154766849.7248
1985	64541484015.7174
1986	62255912944.1513
1987	64642200535.7068
1988	70746019239.2879
1989	77932657181.4392
1990	84151940665.9849
1991	88455778591.7085
1992	90327600257.79
1993	85369092038.9967
1994	94189024259.5218
1995	99750776164.4025
1996	103911256930.112
1997	111465800517.176
1998	117883630326.156
1999	122674192782.693
2000	135170111039.129
2001	142188580583.273
2002	142602105631.255
2003	147603741613.387
2004	159375345378.933
2005	168069344302.706
2006	177909049846.622
2007	187934201302.905
2008	189727577970.654
2009	167151478421.776
2010	187158711051.024
2011	198302643578.254
2012	200134229891.566
2013	201523259772.815
2014	207481527539.713
2015	214993941184.823
2016	222312829928.383
2017	233684046936.553
2018	240284766518.699