Year	constant 2010 US$
2007	4313.63188394028
2008	4425.36017735168
2009	3916.2808339013
2010	3847.80283578524
2011	3973.08154162862
2012	3911.55902016648
2013	3861.91460913105
2014	3807.29111674657
2015	3782.2900119808
2016	3748.57854733873
2017	3771.45621638223