Year	constant 2010 US$
2006	332.526964187103
2007	330.200973386632
2008	347.321408463548
2009	330.92117289294
2010	344.669589114553
2011	339.016977630082
2012	360.436512764223
2013	363.149496646843
2014	377.792676708254
2015	378.10484722529
2016	381.334203905111
2017	385.090604147641