Year	constant 2010 US$
1976	6937525288.94364
1977	8032291957.63302
1978	9212555466.92884
1979	11339242432.9943
1980	12672454383.1367
1981	14099572062.5957
1982	14050472835.4948
1983	13602039842.8097
1984	14902493418.7493
1985	14390133428.4762
1986	14063546471.1002
1987	15579169928.9981
1988	15247667894.4035
1989	14792983820.5223
1990	13782586807.2717
1991	11651903218.0606
1992	14911837050.5056
1993	15556208351.2407
1994	15981706092.1125
1995	16361208403.6614
1996	16833579470.7656
1997	17156011085.8191
1998	17370994607.095
1999	17812235754.322
2000	19612314625.7953
2001	20241190366.5823
2002	20261875592.1821
2003	20612564984.0188
2004	23175916978.4147
2005	26804647890.9465
2006	27641670847.808
2007	30533961090.6162
2008	34343302430.6206
2009	34728648751.2702
2010	32049083215.7969
2011	32697927279.9698
2012	34487623313.037
2013	35836130241.4945
2014	35732389974.8601
2015	37153534646.2401
2016	36651475207.5128
2017	38238787785.9789
2018	37367588237.786