Year including construction (constant 2015 US$) 1995 7405.050679129038 1996 7532.6783059303625 1997 6655.772130721623 1998 5691.538062499972 1999 5750.447871056224 2000 6309.229683657812 2001 6764.770943256659 2002 6724.596551333982 2003 7964.025233840727 2004 8985.149662083757 2005 9193.710835871403 2006 8232.735755079666 2007 7940.787847976033 2008 7694.102711772557 2009 6680.706340978734 2010 7592.227852804518 2011 7920.920627578152 2012 7967.857717391177 2013 9018.715547907588 2014 9438.709036353051 2015 9779.044418141395 2016 10269.023031285848 2017 11574.226013473746 2018 12446.57409232904 2019 12381.449809612253 2020 12123.232433489202 2021 11193.941323660301 2022 9621.287430909495