Year	constant 2010 US$
1991	908.987288420614
1992	899.699568279538
1993	910.616177452249
1994	889.869261190995
1995	918.182656548381
1996	955.59670101734
1997	961.610626575792
1998	983.611167103075
1999	1013.69351283093
2000	978.386180145566
2001	993.612336425856
2002	1154.05494611396
2003	1154.95903268035
2004	1174.04640547862
2005	1223.15265944619
2006	1239.28131290591
2007	1259.21352520162
2008	1289.45050871703
2009	1322.64515511288
2010	1375.08861623074
2011	1394.58515792265
2012	1466.21388237453
2013	1475.49862828946
2014	1503.38294033087
2015	1501.85475255383
2016	1512.19639534342
2017	1530.50921598806
2018	1858.84587629337