Year including construction (constant 2015 US$) 1982 9132320.627373658 1983 9370030.878542965 1984 4969070.131873249 1985 6097338.39006932 1986 7837494.170326946 1987 6632739.971873181 1988 5343348.0421605725 1989 6329513.474509453 1990 6408716.678434198 1991 8441129.26199228 1992 6450582.666785779 1993 6456520.391095258 1994 6885445.492908803 1995 6885848.050489107 1996 6849718.507656854 1997 7184646.414469495 1998 11370339.495071832 1999 12550336.402336923 2000 13923661.587542845 2001 12881641.29092683 2002 11680107.553115495 2003 11756090.29639781 2004 10804041.618979665 2005 10453112.048349952 2006 14661348.353449292 2007 14688420.350724712 2008 13314591.96854341 2009 13236495.7979645 2010 14497608.057660777 2011 15398129.364800055 2012 18717820.45077415 2013 21705602.811787885 2014 21139808.132671095 2015 26055338.106363956 2016 25464786.136058494 2017 21595805.23176006 2018 18583970.055323184 2019 16835894.55219433 2020 16360638.743302684 2021 19814223.96346689