Year	constant 2010 US$
1981	841.994422761063
1982	807.438653845564
1983	742.411483019978
1984	747.850840633042
1985	749.951810446357
1986	720.703202056348
1987	706.30293928283
1988	718.220429509624
1989	698.58677291297
1990	727.483913109246
1991	727.309329225013
1992	735.170272181542
1993	711.065744536592
1994	687.704473030797
1995	705.960095572051
1996	744.185404161952
1997	738.36673986436
1998	736.275646555732
1999	718.480925033361
2000	716.062932167366
2001	810.733518851221
2002	842.80319388885
2003	870.122094532655
2004	881.187952367303
2005	926.685839935885
2006	910.06276926774
2007	1005.03805295052
2008	948.601508308465
2009	991.358251500652
2010	1005.79813652445
2011	998.014239687776
2012	1002.90497518221
2013	1067.07776203186
2014	1063.17055065412
2015	1061.34208471556
2016	1036.77194476747
2017	1031.84221960348