Year	current US$
1960	179700000
1961	141300000
1962	172720000
1963	174680000
1964	171790000
1965	124220000
1966	137760000
1967	156730000
1968	164940000
1969	182600000
1970	213570000
1971	243020000
1972	347440000
1973	442120000
1974	635800000
1975	893860000
1976	716150000
1977	771680000
1978	672510000
1979	871040000
1980	958030000
1981	1179310000
1982	808050000
1983	802930000
1984	873830000
1985	774335000
1986	729388000
1987	733075000
1988	930539000
1989	956363000
1990	743805000
1991	660729000
1992	566107000
1993	567777000
1994	3364281000
1995	3438482000
1996	3922674000
1997	4779487001
1998	4980499844
1999	5136706002
2000	5736868809
2001	5276447753
2002	5165032529
2003	5471130399
2004	5936053507
2005	6145152828
2006	6609865954
2007	7160483974
2008	6748363650
2009	5481300579
2010	6753785111
2011	8468633438.000001
2012	9069682694
2013	9650623978
2014	10009778174
2015	8991701283
2016	9405063720
2017	9468589781
2018	10059378985
2019	10795893736
2020	10292058006