Year	constant 2010 US$
2007	4830.85803453798
2008	4829.63751231282
2009	4530.3998972144
2010	4521.14745096555
2011	4583.70819426158
2012	4621.99885809735
2013	4572.44810714861
2014	4575.07112260808
2015	4542.47518818615
2016	4525.21366106717
2017	4612.41423050573