Year	constant 2010 US$
1970	21587619484.3513
1971	22091752405.901
1972	23118518549.5657
1973	24482544999.3106
1974	25436234997.9319
1975	24784099738.0394
1976	24661812822.2804
1977	24666252888.4599
1978	24216880832.7588
1979	25283607605.1289
1980	24990192979.4568
1981	24537860879.636
1982	24560061227.0784
1983	24007642542.3962
1984	25407744552.5989
1985	26497226686.8882
1986	26404725233.6964
1987	26924768404.798
1988	25594597490.6935
1989	24563021271.1981
1990	24274046728.2504
1991	23652066940.5763
1992	23887575651.4546
1993	24313822352.1301
1994	24989267971.8737
1995	25063639134.1514
1996	26169956542.1205
1997	27449436663.4496
1998	27244823444.0921
1999	27380985589.4113
2000	27208377873.9832
2001	26998214559.4926
2002	26820241770.3019
2003	27660154975.872
2004	28914474705.639
2005	30023012138.4255
2006	30741563435.8196
2007	31841960739.0045
2008	32704259296.8427
2009	30301071495.9327
2010	30836839928.3055
2011	31376678417.2067
2012	32036213787.3983
2013	33116075770.0262
2014	34109726397.3528
2015	32517776368.3993
2016	30924346300.841
2017	30938776528.3331
2018	31241256291.1898