Year	constant 2010 US$
1980	61759929267.6323
1981	65406837755.5165
1982	64094557398.1319
1983	68210573845.9456
1984	74522108298.362
1985	83897491403.8176
1986	84447934276.4316
1987	93136430418.3025
1988	81263481386.2191
1989	69860572492.2161
1990	20011661838.3647
1991	10902382428.5908
1992	11524044876.1338
1993	11800264112.6303
1994	12126937119.2636
1995	14887542236.3612
1996	19353804927.5755
1997	20726540476.5128
1998	18074996615.6762
1999	14871531068.0926
2000	12319480167.8625
2001	12469134966.8336
2002	13573642886.1514
2003	14450791931.772
2004	17992419114.6609
2005	19627250575.335
2006	21131311763.9096
2007	25277852984.9736
2008	25904155949.6413
2009	22869365100.8528
2010	25395559767.1585
2011	28589346148.6395
2012	29171382157.8449
2013	31983958305.1306
2014	32983416813.3207
2015	34875659943.1434
2016	37702924055.7737
2017	39879721131.7179
2018	39577501015.2972