Year including construction (constant 2010 US$) 1991 10275.3706958388 1992 11636.2817739986 1993 11781.5593745408 1994 12380.9233933361 1995 14189.8651183958 1996 14394.8709379499 1997 13816.4630329291 1998 13819.4364697358 1999 14846.5863568749 2000 14564.4037426556 2001 14844.0449892817 2002 15870.3704179486 2003 16579.2125130892 2004 15932.7824978892 2005 16031.4987153226 2006 17447.7466887124 2007 25442.687962852 2008 28086.663603608 2009 28848.8719307761 2010 32117.6034529495 2011 24152.505307344 2012 23647.8076607941 2013 21989.4235965572 2014 23109.4327071897 2015 26510.2217991191 2016 27449.5836650912 2017 27443.2719802627