Year	constant 2010 US$
1975	11756482149.3165
1976	11845624259.0976
1977	11705053953.0247
1978	12189621658.6107
1979	13570182640.1164
1980	14571317867.9037
1981	15025595456.405
1982	15162011175.401
1983	15585827001.408
1984	16279825416.4945
1985	16985743651.6875
1986	17369826744.0063
1987	18406851093.2672
1988	19230643105.0684
1989	20087545728.2763
1990	20034568750.0254
1991	17609547570.5915
1992	17825428756.9639
1993	18796231883.4112
1994	21198737847.0885
1995	22705932878.3259
1996	23520453918.9331
1997	25866009630.9907
1998	28589026313.0858
1999	31281581232.6866
2000	35725025283.4789
2001	37017663552.8003
2002	38248053872.677
2003	39348650595.8389
2004	41274363755.2583
2005	42849104433.7656
2006	47745501648.603
2007	52561108971.6077
2008	51187680810.4537
2009	39295673617.5881
2010	42312712528.9755
2011	42265033248.5497
2012	37425586285.3321
2013	37742123730.3811
2014	37400422220.6629
2015	37603059162.4725
2016	39006949086.1208
2017	42116697709.4473
2018	42029285695.3333