Year	constant 2010 US$
1991	1320.72858310079
1992	1339.05452751451
1993	1352.69534721767
1994	1365.97559415049
1995	1392.97814449341
1996	1401.28280063972
1997	1424.2763397474
1998	1419.53914371581
1999	1397.60511501428
2000	1429.83907319331
2001	1452.92498620398
2002	1435.95448673433
2003	1406.36536137007
2004	1394.56769190952
2005	1370.62538161066
2006	1363.25156773609
2007	1350.93605710084
2008	1332.67950414708
2009	1363.9045050309
2010	1402.931759649
2011	1427.64282743498
2012	1507.45457558145
2013	1560.32351201363
2014	1590.50785293762
2015	1540.1109441005
2016	1574.72159144425
2017	1602.73246988019