Year	constant 2021 US$
1970	6751600037.33635
1971	7518629990.160467
1972	8954019972.085962
1973	12348939893.04454
1974	17670790022.13479
1975	20013879964.530468
1976	17000830075.025572
1977	19119809938.311592
1978	20492420020.81872
1979	25275780220.031742
1980	26050130043.02979
1981	25536619796.75294
1982	25682699917.793293
1983	23799460000.991833
1984	24863429968.833935
1985	26815129887.580883
1986	26437290231.704727
1987	26329060087.20399
1988	25280719894.40918
1989	25752929895.401005
1990	28453430335.044884
1991	27693020073.9801
1992	26049090135.45514
1993	24745249796.390545
1994	27201040001.869225
1995	24326060115.814205
1996	20840649988.17444
1997	20191049971.58051
1998	21062460050.582897
1999	20371299849.03337
2000	20750750114.440933
2001	24836130079.269405
2002	29290729949.951176
2003	33643980199.813854
2004	32836589966.77401
2005	32631839704.51358
2006	35037899745.94117
2007	37852389554.97742
2008	41100190025.329605
2009	47099390176.77309
2010	48921129872.322105
2011	48144350177.76492
2012	50268050355.911285
2013	54244299917.22109
2014	49993410028.457664
2015	55459260047.912636
2016	58269420551.30007
2017	65080309553.14639
2018	68705200067.52017
2019	68695769989.013725
2020	82544539848.3277
2021	71600770896.91165