Year including construction (constant 2015 US$) 2000 32993520.6218385 2001 44242297.537433594 2002 53795576.24148532 2003 42467571.869064964 2004 39360568.89515273 2005 38534572.77927798 2006 34917539.06243432 2007 31537480.033996943 2008 26158072.209938582 2009 18761629.047642883 2010 19910882.631907973 2011 20121603.980253156 2012 19312376.001181718 2013 17641329.648283467 2014 17895487.992690705 2015 22774267.700195298 2016 26916527.264087822 2017 24519802.83054184 2018 24105090.838251077 2019 30961982.77136171 2020 29587147.173994012 2021 29800169.896284793 2022 23972210.565340947