Year	constant 2010 US$
2006	425.663588577254
2007	427.913003189927
2008	478.842244314645
2009	417.180743060722
2010	464.827533207721
2011	435.27782258061
2012	485.461779943362
2013	467.922983286503
2014	489.624195139172
2015	479.90327073285
2016	513.077222490069
2017	522.165549460723