Year including construction (constant 2010 US$) 1991 5335.80913649607 1992 5493.19599315946 1993 6044.52366553224 1994 6201.75274241329 1995 6344.53287224048 1996 6976.75244633329 1997 7709.1201396885 1998 7487.37445428461 1999 7363.72397052026 2000 7586.37897571322 2001 8087.72491781755 2002 7969.8978332777 2003 7808.83022641793 2004 7947.25915042948 2005 8540.2117582882 2006 8403.93075936092 2007 8255.50727859856 2008 8552.60869309713 2009 9169.07172805469 2010 8769.74670826049 2011 9194.59429163719 2012 9206.2021516384 2013 9344.98794422225 2014 9413.23026318477 2015 9007.98925596866 2016 9401.59585879405 2017 8944.21744650078 2018 9166.7275011431