Year including construction (constant 2010 US$) 1995 10885.644952586 1996 11452.2578851891 1997 12101.0318752248 1998 13516.2848845457 1999 13802.7653754761 2000 14936.179473858 2001 17501.0841772092 2002 17568.0543947109 2003 19986.3165076562 2004 22134.5896169306 2005 23466.612412904 2006 25960.9372555765 2007 27369.754558439 2008 28319.3154998614 2009 26523.8975212553 2010 31970.4991508625 2011 34326.2558945743 2012 33593.7566972612 2013 34163.9377110139 2014 36687.6235896136 2015 36132.5992628422 2016 35603.8478928184 2017 37633.0934068616 2018 39802.8847228825