Year	constant 2010 US$
2007	517.282523898936
2008	527.10121693261
2009	566.943172126543
2010	583.930301497132
2011	583.939704440328
2012	613.932606959757
2013	645.900975956555
2014	667.938868428988
2015	624.123948971588
2016	577.59067925343
2017	561.206338752704
2018	549.9367052267