Year	constant 2010 US$
2007	1239987316.87943
2008	1295594013.73632
2009	1288430001.94973
2010	1258386478.31709
2011	1302993292.43068
2012	1279706892.0243
2013	1265861295.75861
2014	1300885393.8152
2015	1339703337.2986
2016	1395767745.08423
2017	1445801804.41551