Year including construction (current US$) 1995 15194800 1996 16556899.999999998 1997 14568600 1998 17842900 1999 17288200 2000 19087500 2001 19889000 2002 16459399.999999998 2003 16289400 2004 14699700 2005 13143100 2006 10280000 2007 8089300 2008 9892300 2009 19301500 2010 21485300 2011 25410200 2012 27286500 2013 23179800 2014 19253600 2015 19347900 2016 19652600 2017 19491600 2018 19076500 2019 18982600 2020 18173500 2021 19589200 2022 20875400 2023 22331800