Year including construction (constant 2015 US$) 1991 6502.118980581132 1992 6668.6142069477855 1993 7242.235887046822 1994 7333.343366276479 1995 7660.098439737446 1996 8007.599247482838 1997 8391.196998799669 1998 8483.476911073292 1999 8403.427995479024 2000 8587.235657910598 2001 9160.644607029493 2002 9077.170370851816 2003 8919.643552956575 2004 9132.098338253942 2005 9797.013436008303 2006 9690.691939651397 2007 9551.078331745743 2008 9932.051977089257 2009 10721.966440665004 2010 10343.633127369792 2011 10870.794640233093 2012 10925.717393598725 2013 11106.757942460688 2014 11134.967699950126 2015 10633.375788592426 2016 11140.37830415369 2017 10921.602099111971 2018 10853.44494255225 2019 10919.376552538182 2020 9862.56354811369 2021 9978.885604673664 2022 10144.215655090275