Year	constant 2015 US$
1980	352454188.4538423
1981	365627048.55388576
1982	387266258.2244297
1983	405634657.16759074
1984	423678440.94619244
1985	428779158.7395278
1986	437018233.45251864
1987	447004222.364097
1988	457407816.28913665
1989	447746323.75833976
1990	467000469.70200145
1991	442365757.1110959
1992	483736676.50759375
1993	496417221.7808703
1994	466671056.6722241
1995	475515185.14774406
1996	468461342.4049666
1997	486944087.0598748
1998	491958723.0932496
1999	505344475.0799036
2000	562706350.5637219
2001	577249280.3941112
2002	588167941.7141109
2003	598338361.3172212
2004	612092808.8828241
2005	631813599.4870248
2006	649730591.7619784
2007	654999980.7738796
2008	666976416.8912437
2009	704440523.5953557
2010	701205757.893093
2011	728688091.6411515
2012	756994611.2940344
2013	795092900.96515
2014	824013414.8089982
2015	876930850.372276
2016	910767074.1084837
2017	960721614.0331002
2018	1012841957.4965302
2019	1031837675.8544583
2020	975325344.6086503
2021	1001294140.2511761