Year	constant 2010 US$
1981	158236236458.755
1982	137456711377.847
1983	111792305918.657
1984	93723201253.671
1985	101380581488.412
1986	86824125342.588
1987	67124785915.7704
1988	71398316458.079
1989	72846664557.0514
1990	90554491585.6037
1991	92597732178.0729
1992	100096724642.377
1993	101533087504.824
1994	95915589915.3681
1995	95594830375.6537
1996	113553550036.594
1997	111873540166.203
1998	111738364465.928
1999	106003560519.102
2000	110343250778.453
2001	140895045393.152
2002	144908163711.427
2003	170929614351.488
2004	200811464550.426
2005	215760364720.089
2006	207140883534.046
2007	294812223521.936
2008	275535791068.411
2009	337285474165.325
2010	339991981374.336
2011	328953606725.306
2012	330274995268.067
2013	381478502902.9
2014	389665851338.009
2015	388852851373.937
2016	365630862750.003
2017	360092222400.165