Year including construction (constant 2010 US$) 1995 36975.6888146696 1996 36679.0407770358 1997 38039.7422178976 1998 38236.7575578011 1999 42212.1336491768 2000 43779.1923238004 2001 45989.6714179768 2002 47815.8623135493 2003 52763.7244169227 2004 54116.3969479393 2005 50953.7938019453 2006 57581.6905440797 2007 53932.66407712 2008 46254.3495664067 2009 48986.847584229 2010 47106.9673825396 2011 50044.43606999 2012 54990.3620939288 2013 58319.9906732844 2014 56927.4188320257 2015 54133.3524544983 2016 55848.2814361158 2017 55464.1268339017 2018 56165.8026019352