Year including construction (constant 2015 US$) 1995 10122.892306986929 1996 10736.463482385107 1997 12483.575840483487 1998 13594.686167359794 1999 13738.740901320001 2000 15067.086464047987 2001 17159.986503627726 2002 20471.692186496486 2003 21372.385353190843 2004 19799.506922919052 2005 21748.51018005676 2006 22867.0530065484 2007 23166.163400752735 2008 22417.427181493862 2009 21216.66659961494 2010 25563.54213955928 2011 25952.961481702823 2012 27244.063645339324 2013 28219.89184221971 2014 28930.24356753538 2015 27740.568559792137 2016 30283.323058859354 2017 31194.077672932624 2018 32749.034196194178 2019 34457.39181798511 2020 34438.84074773241 2021 36740.19158794368 2022 33618.4291724576