Year	constant 2010 US$
1976	5256432039.18584
1977	5796890165.69768
1978	7053076201.6287
1979	8928552679.56067
1980	9380060478.63106
1981	9861222026.49201
1982	10436809302.6509
1983	10495827301.0275
1984	11739048730.3818
1985	12157238741.8002
1986	11716877104.7622
1987	12611380659.0147
1988	12238868959.387
1989	11765225832.7623
1990	10350522308.8695
1991	9150003340.15608
1992	11045669510.3158
1993	11100997205.3773
1994	11571705205.5106
1995	11813069634.0156
1996	12640747269.4505
1997	13461512631.8306
1998	14121828740.9149
1999	14473610999.0333
2000	16065357599.1259
2001	16747639939.8987
2002	16761298341.2051
2003	16973827055.3689
2004	18188684055.0197
2005	20190060815.4343
2006	21658685558.1312
2007	23658069761.3299
2008	26326757533.6261
2009	26701706522.6752
2010	24209167842.031
2011	25721843865.6315
2012	27781486779.2661
2013	29752108514.3211
2014	29642425715.471
2015	30854114206.1477
2016	30769263855.2621
2017	31951109625.4893
2018	31631157032.1033