Year	current US$
1970	6090687780.3917
1971	6482058727.16173
1972	9233171134.98422
1973	12545834112.5543
1974	13898034285.1557
1975	17732072453.166
1976	21104002512.2027
1977	26706816910.8637
1978	36540656448.9833
1979	38067718195.674
1980	38716324984.2992
1981	43855181789.0792
1982	40903121006.501
1983	43620377438.2485
1984	64062129559.1535
1985	60443860837.6603
1986	87713435453.8756
1987	107082308529.945
1988	126818404281.8
1989	123154291976.771
1990	128871163965.003
1991	147368363777.512
1992	140850529945.377
1993	152788841146.138
1994	181452957602.062
1995	195743895359.963
1996	163431696637.355
1997	147391957262.435
1998	119184858948.803
1999	137041694967.193
2000	151470256758.647
2001	132148485340.524
2002	127178204170.214
2003	139284747501.076
2004	149970355240.727
2005	145641899316.764
2006	136517306309.453
2007	136618933934.601
2008	151573896013.536
2009	160813070284.037
2010	179792193417.353
2011	196614012946.978
2012	203570168148.708
2013	166456641800.237
2014	149749216216.096
2015	130374714854.65
2016	139583992039.096
2017	137054004476.552
2018	138896999884.292
2019	141020141028.14
2020	138356316487.415
2021	135877190270.206