Year	current US$
1970	14471367547.2717
1971	13829261197.4577
1972	17085645913.3421
1973	21608205437.8068
1974	29958732509.7433
1975	37751378193.5193
1976	43183499727.0843
1977	49576504904.5118
1978	54910819347.3034
1979	74879383928.7253
1980	57219551715.1054
1981	58851715376.3184
1982	53338838060.6078
1983	50885393794.665
1984	49428203652.7823
1985	55533576686.2598
1986	62558886956.3275
1987	70718921404.5611
1988	72917571376.3247
1989	87598825168.5761
1990	124953002717.908
1991	123904589271.569
1992	131217322365.242
1993	150227471837.688
1994	105982755959.832
1995	139430497350.303
1996	150081502200.798
1997	157614871068.93
1998	230279822292.334
1999	211270820837.631
2000	226560793397.926
2001	160828497016.568
2002	192107672411.784
2003	255345544867.302
2004	335959620233.958
2005	420120243138.406
2006	463398755945.139
2007	567835932956.302
2008	641212675386.015
2009	535249299613.424
2010	651354003433.262
2011	707702807263.913
2012	743919593925.909
2013	812128664939.146
2014	792603412596.08
2015	726983882746.545
2016	728847826520.938
2017	716486542485.28
2018	656435227682.852
2019	629381111739.29
2020	600186412689.749