Year including construction (constant 2010 US$) 2000 15180.0741259548 2001 14771.4886470143 2002 14410.6962312192 2003 14392.122490211 2004 16898.8250846307 2005 18551.6453195216 2006 19368.8240377288 2007 20452.0846583638 2008 22242.0850615659 2009 18667.2575955959 2010 18916.2370109216 2011 18364.956316725 2012 18309.3639026134 2013 19557.0531674715 2014 19247.9753016057 2015 19402.4242902801 2016 21619.3918016713 2017 23786.8561638012