Year	current US$
1970	3888414107.8067
1971	3772750374.53184
1972	4251111636.78619
1973	5476737877.78146
1974	7189985912.47394
1975	7759587182.68089
1976	8102498311.23516
1977	9169535951.28375
1978	11060121298.1976
1979	14648313278.9559
1980	18489845397.92
1981	17205663975.4727
1982	17690314914.1017
1983	19032342872.259
1984	19682237122.5479
1985	20300682887.1311
1986	28032037210.0273
1987	36714444061.4464
1988	40014439422.7908
1989	35115168114.5922
1990	35002650630.252
1991	35624942636.1791
1992	51995694419.6763
1993	49345603848.8989
1994	48696943605.908
1995	51057897064.0675
1996	58487661563.5588
1997	56115164892.8703
1998	52867267335.2558
1999	53250311435.8153
2000	46377353210.999
2001	51468616701.8679
2002	53003788024.4156
2003	67196675579.7518
2004	75208211993.5425
2005	74073223968.6294
2006	83967572942.7978
2007	86820571973.6438
2008	100477608079.946
2009	94317534367.5686
2010	87820852553.6636
2011	89965155366.7795
2012	81176930644.7446
2013	83933570941.4327
2014	83557152992.8803
2015	71094475818.3077
2016	69078574819.9472
2017	77739564141.4711
2018	86559839428.448
2019	78132724659.9667
2020	73977796168.2713
2021	82644080010.9527