Year including construction (constant 2010 US$) 2007 122917.516996599 2008 120160.858268279 2009 116284.65895773 2010 123038.804159134 2011 126115.109410207 2012 126054.796003701 2013 128247.729492067 2014 134072.330375714 2015 133577.620866191 2016 133078.734527169 2017 137842.18557286 2018 137711.263461065