Year	constant 2010 US$
1991	800.680772825767
1992	836.580184483785
1993	841.599744281728
1994	861.837390176621
1995	852.307024999465
1996	919.483091368096
1997	885.903554470212
1998	920.974519054718
1999	935.073772421396
2000	928.514432158004
2001	960.951433495726
2002	898.531384375569
2003	960.263824489629
2004	955.038830793003
2005	994.889412196201
2006	1035.88463553572
2007	1095.65609928761
2008	1099.90231348172
2009	1118.47850076727
2010	1208.62863162239
2011	1314.57913635726
2012	1384.753588412
2013	1441.41680327041
2014	1434.0526340223
2015	1440.33596017377
2016	1495.44274005087
2017	1552.22602142389
2018	1591.00181840241