Year including construction (constant 2015 US$) 1991 73915.95693418375 1992 74905.36763221497 1993 73724.8931219 1994 79526.22177230165 1995 81138.23050026559 1996 82186.07311618705 1997 85362.79491985025 1998 86375.66672305224 1999 86575.8689821258 2000 95144.22382994504 2001 94076.91542319005 2002 99247.20370730697 2003 100699.06666776423 2004 99774.745223496 2005 97788.6441654522 2006 102060.09554611892 2007 98448.68747841168 2008 98386.09714751746 2009 102679.79335490844 2010 108801.8259337846 2011 110930.64274444604 2012 114872.77189838335 2013 114488.26134559963 2014 115457.3970996244 2015 114775.13503435747 2016 121562.38356539948 2017 128173.36256187949 2018 127627.70362721066 2019 130250.85239945563 2020 122559.86775290016 2021 129783.07197079968 2022 136863.0225053117