Year	constant 2010 US$
1981	129904277863.817
1982	121428931892.307
1983	108292201030.568
1984	106827746584.045
1985	112777976444.73
1986	112022690886.382
1987	114714498585.709
1988	125843837180.346
1989	124923202554.44
1990	138809527507.819
1991	139534625701.474
1992	144627102545.306
1993	139214339161.282
1994	138741544617.521
1995	140306295180.579
1996	146431972310.304
1997	151273451222.157
1998	154566782353.329
1999	158248034108.991
2000	156505459541.973
2001	170848118593.967
2002	196783327381.929
2003	208847581085.934
2004	226511990657.218
2005	240005235930.952
2006	268758126516.968
2007	278586421411.31
2008	297550233356.107
2009	319393719545.959
2010	343845536572.676
2011	362818819190.907
2012	379703704263.44
2013	405763857220.218
2014	438629737750.411
2015	454174735425.158
2016	449091010921.112
2017	449443217961.461