Year	current US$
1970	6375752751.54322
1971	7049922433.68217
1972	8269353746.25376
1973	10011211131.7981
1974	10590482424.0299
1975	15230053838.4956
1976	14913046192.2731
1977	16057936214.8962
1978	18962013583.8926
1979	23583553896.654
1980	30085826981.1759
1981	29764984967.8457
1982	27193963574.4235
1983	25439451961.4976
1984	23022346151.9021
1985	23606293696.0986
1986	28509361675.4617
1987	34244649047.2299
1988	41703271220.2063
1989	40057118412.9581
1990	46973589289.7729
1991	50405286028.2187
1992	55084847332.3974
1993	57228910767.8465
1994	62510987131.9253
1995	66661659293.0411
1996	68832596255.85
1997	82043279675.3022
1998	66267603579.3676
1999	63532256879.0754
2000	63578904178.8773
2001	62512782648.8386
2002	76895719681.257
2003	92823690430.5718
2004	105501869425.896
2005	121610278000
2006	126589011039.558
2007	147093013205.282
2008	139139948713.235
2009	118665974450.849
2010	137083631621.789
2011	137895285921.949
2012	141031652896.971
2013	146970435712.559
2014	165940507723.336
2015	157597920797.833
2016	141773922574.994
2017	140876304386.409
2018	145299350654.271
2019	145547811609.808
2020	134741830598.592
2021	158890910174.48