Year	current US$
1960	822600000
1961	919800000
1962	874900000
1963	1075510000
1964	1229962000
1965	1313179000
1966	1432552000
1967	1448986000
1968	1576060000
1969	1714170000
1970	1840670000
1971	2271947000
1972	3035536000
1973	4123580000
1974	9103097000
1975	10275156000
1976	14075790000
1977	13537151000
1978	14039390000
1979	21250348000
1980	29322791666.67
1981	30229852221.232002
1982	27402179488.947998
1983	23330333550.733997
1984	22617979782.733997
1985	20363345260.813
1986	16511438986.416002
1987	17501747856.363003
1988	17697535938.482
1989	20249754015.255005
1990	23077903870.141003
1991	21317405997.564003
1992	24099511146.619007
1993	24402695100.003998
1994	26333929538.828003
1995	30638590938.071
1996	33239028718.659
1997	36767288109.532005
1998	33342798384.838
1999	37048428209.872
2000	43322392510
2001	43385155133
2002	44628301192
2003	54036021517
2004	67952236956
2005	89219555183
2006	111326570599
2007	129484770276
2008	175672112021
2009	118038992912
2010	162371504593
2011	233561064891
2012	243192457864
2013	250855404899
2014	254902074232
2015	165950684887
2016	132433761145
2017	147082243319
2018	176541228837
2019	159325740595
2020	130014576717