Year	current US$
1970	5079947980.07825
1971	6171930098.9859
1972	7261577459.34885
1973	8912083601.61959
1974	10171075079.4818
1975	11535631075.4456
1976	12208336237.9658
1977	12573960813.0396
1978	15806399990.5651
1979	17307559293.5272
1980	17471523552.7112
1981	17657185982.0799
1982	18338040951.6357
1983	19456509069.9906
1984	21073789428.0777
1985	19907258770.1033
1986	21055766844.8436
1987	21892845746.2064
1988	23860334591.0631
1989	23524768770.7357
1990	24919222976.4472
1991	21190148464.4891
1992	19330776144.8316
1993	19646323478.4103
1994	24832405590.2393
1995	26205676634.1677
1996	21421549071.4612
1997	21717292568.991
1998	22168992729.1606
1999	24340810005.4154
2000	25981672173.8917
2001	27189407135.4319
2002	28858806062.824
2003	30931537396.4646
2004	32764356174.095
2005	36760805676.7927
2006	42186400672.3737
2007	45402081688.3002
2008	47747180792.54
2009	48772010310.3973
2010	50145314664.8857
2011	58368849455.3436
2012	62116251531.0671
2013	65874791735.5618
2014	68926047636.4801
2015	74925815420.5882
2016	78385006060.9253
2017	82856190368.4842
2018	85169474842.1304
2019	88404557254.1151