Year including construction (constant 2015 US$) 2000 5771.841028175028 2001 5525.199262072362 2002 5477.306902672902 2003 5527.127993968866 2004 5913.976174728584 2005 6168.722033669293 2006 6230.699853794521 2007 6306.139111689974 2008 6760.58372016487 2009 6735.862463033046 2010 6940.710185003932 2011 6581.012773669745 2012 5487.228555691702 2013 5264.17263328967 2014 5617.089418219457 2015 5124.504745519747 2016 4919.231404830999 2017 5076.478068203166 2018 5290.416650805451 2019 5105.582906351117 2020 5050.25102815971 2021 5094.584359876937 2022 5276.119723193025