Year	constant 2015 US$
2005	6657.3674802933265
2006	8435.681421930149
2007	9470.671736998887
2008	9252.049509696255
2009	9276.903989835619
2010	6792.865425096576
2011	7007.98570518456
2012	7519.155729847038
2013	7298.668364147091
2014	7159.75447353984
2015	7383.2346288341505
2016	6733.506791618468
2017	5764.775087372222
2018	5282.100774566744
2019	4722.592569590245