Year including construction (constant 2010 US$) 2010 37581274382.3147 2011 38461508452.5358 2012 42040598179.4538 2013 41580052015.6047 2014 41679583875.1625 2015 43771131339.4018 2016 43704551365.4096 2017 41443953185.9558 2018 44257477243.173