Year including construction (constant 2010 US$) 1991 10192.7829156428 1992 10466.8261746594 1993 10976.0049038676 1994 10783.8090265053 1995 11295.9245324631 1996 11805.8695328361 1997 11556.1379054961 1998 11859.1461978763 1999 11831.1578752241 2000 11858.0950687666 2001 12365.3105396635 2002 12317.8143221218 2003 11604.6854561736 2004 11826.5938413504 2005 12022.7915706633 2006 11667.7654423692 2007 11268.3711170916 2008 11407.4156377287 2009 11062.7778123338 2010 11234.5677732358 2011 10984.108464447 2012 10897.9562110946 2013 10045.9423273068 2014 10390.7322407765 2015 9808.79881913459 2016 10761.3673371134 2017 12216.1201551079 2018 12053.8332194524