Year including construction (constant 2015 US$) 2001 16420184.30447013 2002 14980350.249572385 2003 16009167.686343374 2004 16939065.731230814 2005 17592246.547344692 2006 18720479.556009155 2007 19257426.66065503 2008 20389832.306926772 2009 23840409.861666575 2010 22725205.122405585 2011 20372853.49953951 2012 23001950.70432257 2013 27189464.260851692 2014 29231367.865317073 2015 30366552.1196444 2016 31136009.176941417 2017 33307231.468565125 2018 34702792.09000579 2019 36032667.92918012 2020 34939748.76065065 2021 33552174.27460783 2022 35763539.89179648