Year	including construction (constant 2010 US$)
2007	58598.9003395171
2008	53438.9225808696
2009	49272.7199512152
2010	45858.8653845342
2011	45868.1784241614
2012	44716.1874164399
2013	48405.0138917886
2014	50062.3219808935
2015	49662.2175968114
2016	48407.8805311418
2017	45840.6293034006
2018	43643.9134881285