Year	constant 2021 US$
1970	3527229969.9783344
1971	3586759977.340699
1972	3264539976.119994
1973	3718509974.993767
1974	4957700077.056886
1975	5234569924.831392
1976	4948710011.005402
1977	4986049953.937532
1978	6004990045.428279
1979	6177050024.986268
1980	6090829982.757569
1981	6484409975.051884
1982	6605799900.054936
1983	6354810039.520266
1984	7587849964.14185
1985	7673069957.733152
1986	8398749969.482423
1987	7728979911.804206
1988	8412119956.970216
1989	9951039962.768555
1990	9561569992.065437
1991	9516330108.642588
1992	8986280006.408691
1993	8867279914.855957
1994	10274689891.815191
1995	8316189998.626711
1996	8369310028.0761795
1997	7236790019.989016
1998	7802730003.356934
1999	6607859992.980959
2000	6047509984.970096
2001	7298939980.506899
2002	9231720064.163208
2003	8266409976.959235
2004	9426360057.830818
2005	15763329902.648924
2006	21639860029.22059
2007	12665900077.819826
2008	11995780109.405525
2009	14003859899.520884
2010	15184800048.828136
2011	13348189966.201784
2012	15041050021.171577
2013	13479869922.161104
2014	13955869933.485998
2015	15468500004.768375
2016	14690269835.948956
2017	16599879765.033749
2018	16573919943.332672
2019	18802380081.176777