Year	constant 2010 US$
1991	1110.86004721521
1992	1038.17260891937
1993	1059.1977156645
1994	1104.34286355998
1995	1092.92454801561
1996	1140.87479107965
1997	1166.38421396382
1998	1094.48163930979
1999	1094.63044412056
2000	1134.4072324202
2001	1004.86256587439
2002	1022.80844134558
2003	1305.48499370936
2004	1270.91694581951
2005	1245.93802169133
2006	1227.20019338927
2007	1324.97194979212
2008	1445.91994264313
2009	1524.17355120093
2010	1475.21692745761
2011	1493.97918675505
2012	1696.98332022236
2013	1649.16746887698
2014	1536.90557069709
2015	1882.59532249954
2016	1719.76498693463
2017	1957.82044607248
2018	2058.43669553631