Year	constant 2010 US$
2007	4436.88158179118
2008	4849.05302237549
2009	5015.9884997827
2010	5735.32407000062
2011	5507.05615897006
2012	5697.66461663892
2013	5832.42350121912
2014	5899.88837193172
2015	5679.97157185847
2016	5243.0868957365
2017	4644.1621727694
2018	4536.80055739884