Year including construction (constant 2010 US$) 2006 3309.98752812525 2007 3445.63134868751 2008 3857.70867351804 2009 3996.56626358887 2010 4239.32353138086 2011 5899.90431870197 2012 6317.23050174403 2013 6629.11620909257 2014 5708.79890747039 2015 4923.58430934997 2016 5022.22952070099 2017 5646.08286857445