Year	constant 2010 US$
1981	226558920165.982
1982	199549456566.953
1983	172720842406.528
1984	144327140633.017
1985	131463206901.258
1986	121162040714.06
1987	114578165636.146
1988	123508202029.046
1989	127459962705.372
1990	135131946591.876
1991	131859693414.417
1992	129589493815.911
1993	134610083828.287
1994	137603890008.429
1995	137303664708.463
1996	148485205530.528
1997	157828689415.472
1998	164841543894.484
1999	162814971155.752
2000	172018319473.092
2001	159764171869.064
2002	171247496421.465
2003	192313955477.671
2004	190084228330.466
2005	204555203672.528
2006	248161991015.487
2007	247959528817.013
2008	268997565227.634
2009	275511961282.915
2010	283127642658.419
2011	295669895173.78
2012	310882509916.241
2013	328880641919.996
2014	351068422093.346
2015	352774878795.384
2016	346693646837.866
2017	350060687427.196