Year including construction (constant 2010 US$) 1991 2103.1140441078 1992 2192.84364012491 1993 2277.12342330175 1994 2291.30490034863 1995 2373.34646493154 1996 2382.65245509387 1997 2276.90235335354 1998 2339.23518112066 1999 2372.9255510168 2000 2305.67400595341 2001 2348.62255250526 2002 2353.98339986706 2003 2358.18815686894 2004 2659.59531637482 2005 2948.39562913369 2006 2941.49559963017 2007 3033.8901603063 2008 3332.43727869124 2009 2915.74622548747 2010 2852.22019232163 2011 2856.67167520289 2012 2783.81535927909 2013 2677.86897418932 2014 2707.15738951913 2015 2639.70827023906 2016 2768.03030218636 2017 2837.2691040031 2018 2916.43305049718