Year	constant 2010 US$
1960	27775745635.2282
1961	29678372808.5896
1962	31982473480.567
1963	33533811872.108
1964	36830681781.6684
1965	36045193488.6714
1966	38605108306.4096
1967	39424443759.072
1968	42052440278.9128
1969	45219952173.9063
1970	48080240035.8268
1971	51753440548.3242
1972	54759954204.3833
1973	57416211053.3987
1974	60880670498.1293
1975	62682052389.6109
1976	67053839675.5706
1977	69761693034.67
1978	75620359003.3415
1979	78880359248.3612
1980	82361303885.1101
1981	84761719117.7338
1982	86013951430.9353
1983	86402102770.2812
1984	88876166133.4811
1985	90543739648.189
1986	93473179679.2264
1987	97001224864.5997
1988	100627967108.681
1989	103878761337.379
1990	107012232381.321
1991	108693721967.205
1992	111992259024.725
1993	118823765415.929
1994	125861657847.424
1995	132713094480.266
1996	134097236431.727
1997	137324589807.38
1998	136216429065.692
1999	128865854376.028
2000	131439470562.82
2001	133474400402.696
2002	136144023308.341
2003	140149806642.453
2004	145564595092.81
2005	151476481109.218
2006	161160616503.43
2007	172737642940.076
2008	179774693053.52
2009	181466422347.745
2010	190804755264.858
2011	203377424700.45
2012	214144423287.692
2013	222684474519.135
2014	232983166271.339
2015	240188000821.017
2016	243991686932.169
2017	249030721019.37
2018	257778796813.81