Year	current US$
1970	4775621473.83993
1971	5384664238.68023
1972	6456594313.27433
1973	8355432170.08361
1974	10700072635.3876
1975	13129061045.2171
1976	13532778433.5755
1977	15076849649.1579
1978	18140391571.9068
1979	25318778798.8648
1980	28345762896.4871
1981	26306973820.9181
1982	25806681969.2318
1983	23138814685.0199
1984	23708538132.4958
1985	24894124419.1081
1986	32504948484.2499
1987	39923688705.9949
1988	46594506237.1586
1989	50168804816.5822
1990	64194240404.5619
1991	68405960389.8283
1992	74358330230.7185
1993	64719881489.0552
1994	65431030089.7206
1995	75263438898.7499
1996	78989217978.9478
1997	73347931375.6937
1998	75357703367.3995
1999	79139230147.3154
2000	75663263642.4194
2001	79272169481.3851
2002	90529228478.9384
2003	117533220582.727
2004	141558571387.375
2005	155114419204.808
2006	170103506169.206
2007	199444298619.01
2008	226291907199.681
2009	218581932425.887
2010	214178807562.917
2011	229129754223.236
2012	211629105245.941
2013	215917462046.815
2014	218519780042.185
2015	187174824681.706
2016	191104608684.543
2017	201161197358.425
2018	216520923642.144
2019	212345283431.411
2020	222697401993.058
2021	243305057435.966