Year	constant 2010 US$
1981	201739386497.068
1982	163677978341.475
1983	128486579778.804
1984	120681969079.817
1985	118464623000.169
1986	107094684650.831
1987	97609274459.9164
1988	107111610347.646
1989	113337650164.232
1990	116287485578.876
1991	126131981336.349
1992	120995333596.819
1993	131804352091.539
1994	135686018293.983
1995	143717634668.01
1996	164974053028.286
1997	188114745400.927
1998	192452192004.033
1999	172686731013.35
2000	182447929008.79
2001	213674606012.483
2002	237225949473.772
2003	281784472554.482
2004	274816752291.052
2005	314897374145.668
2006	366534074197.839
2007	421347355033.485
2008	423741503128.119
2009	391232791137.541
2010	408235643846.796
2011	437906340619.346
2012	443206735533.612
2013	471265699980.73
2014	480831881819.796
2015	476226522284.94
2016	460786869848.772
2017	465016775862.357