Year including construction (constant 2015 US$) 1977 31702519.623005107 1978 34777385.658536576 1979 39503888.58054802 1980 37417271.56880457 1981 39611221.30924419 1982 45037312.26738933 1983 43004733.51159288 1984 40711411.06654621 1985 46370801.566997886 1986 52096173.99217103 1987 60565376.25654923 1988 65548272.78048781 1989 66453194.019873545 1990 66796110.31376093 1991 71539638.06082506 1992 71858493.10448661 1993 71052410.11743452 1994 74919265.40198737 1995 78908495.2725083 1996 83118498.88587776 1997 90001127.13038242 1998 105032358.92803374 1999 113556168.86479978 2000 127247047.03402592 2001 115804682.685938 2002 118606538.51249626 2003 134929764.40831077 2004 134057794.39927734 2005 211561729.11773565 2006 166377989.64167422 2007 163320214.27280942 2008 156150607.40740743 2009 125994921.16832282 2010 124581415.2363746 2011 117229858.47636257 2012 107040301.11412226 2013 118632965.97410418 2014 116657717.55495334 2015 122874074.07407406 2016 132900162.601626 2017 152906931.64709422 2018 168309328.51550734 2019 167346678.71123153 2020 142544823.84823847 2021 164399698.88587773 2022 192965877.74766633 2023 185105751.279735