Year including construction (constant 2015 US$) 1995 44711.90776231527 1996 44693.584988145056 1997 46974.30949145721 1998 48412.83869051292 1999 49779.26969131304 2000 51682.2547302089 2001 52536.90989338225 2002 53284.866203237245 2003 54778.49309231444 2004 56976.81845113109 2005 58400.93812555314 2006 59979.37411343941 2007 60482.1733400413 2008 60126.86145719324 2009 57617.94112466007 2010 62270.662944007934 2011 63500.674506027826 2012 63749.91528450745 2013 64313.474650195574 2014 65256.55750659904 2015 76625.09791894857 2016 67374.08356737805 2017 68409.70099616656 2018 69460.63166632249 2019 69938.3515458307 2020 68753.59298063572 2021 72767.74207865854 2022 73453.86163201605