Year including construction (constant 2010 US$) 1991 63738.97901671 1992 63363.7078484083 1993 63540.2733775942 1994 64490.3102691267 1995 67471.7295359664 1996 73925.1933515615 1997 77009.4420449232 1998 78995.2073501454 1999 79625.533560634 2000 82053.1779769929 2001 85218.8775625658 2002 84965.9485774481 2003 86231.3624109592 2004 99897.7311448371 2005 95575.901157504 2006 95453.4575925382 2007 100901.054476247 2008 102879.100812895 2009 95911.8483902535 2010 98701.5892801518 2011 97468.0089244359 2012 97995.075922583 2013 98835.9516263985 2014 99415.9456309641 2015 98963.8364066884 2016 101690.900519592 2017 108077.519538625 2018 113129.925386369