Year	constant 2010 US$
2006	544.920217778919
2007	557.687453998103
2008	560.654393808477
2009	577.388544557199
2010	590.987078203232
2011	592.7717988252
2012	608.74026222747
2013	630.032975077144
2014	656.463205990551
2015	688.889645566557
2016	684.032662246758
2017	698.845464549122