Year	constant 2021 US$
1970	5535200028.598308
1971	6449239967.077972
1972	7829159971.892841
1973	9578479928.530754
1974	13562689988.411964
1975	15727829949.43857
1976	13122520071.506508
1977	14819610031.008728
1978	16781120003.499102
1979	18550270069.599155
1980	19798799885.86903
1981	19823949921.25035
1982	21455020019.829292
1983	20249959948.53974
1984	21582079977.989204
1985	23681759902.00044
1986	23037480164.647114
1987	23010510007.858288
1988	22490769923.476505
1989	22891559907.913208
1990	24071730250.50761
1991	23099080026.030544
1992	22707080197.170387
1993	21395409830.74905
1994	22184919913.381355
1995	20297040114.898235
1996	16874660069.577396
1997	17277750000.417236
1998	16976310018.301023
1999	16728029907.703413
2000	17835660131.454483
2001	20920070032.119743
2002	25487359966.278084
2003	30587830202.102673
2004	29606920020.10348
2005	29294709714.88955
2006	31522559835.433968
2007	34930679559.70765
2008	37612689954.757706
2009	40428620119.09487
2010	43968589900.0168
2011	42618750183.10549
2012	41908570379.25723
2013	46254269838.333145
2014	42238599851.60829
2015	45883780334.47269
2016	46380310310.36379
2017	51337889982.22353
2018	54716330148.696945
2019	54378680332.18389
2020	64458440105.438286
2021	57681970779.41897