Year	constant 2010 US$
2006	4134.5934786736
2007	4158.86779802326
2008	4233.02317341411
2009	4216.44542897205
2010	4316.4724622119
2011	4474.54255951682
2012	4742.10308217373
2013	4947.01925619909
2014	4780.28092247645
2015	4551.18390225696
2016	4498.60552025972
2017	4477.70129390705