Year including construction (constant 2015 US$) 1965 189940824.30497268 1966 194172808.8210352 1967 197791818.0058875 1968 202230267.31145227 1969 206783871.85650834 1970 212510831.64660847 1971 218383940.8765658 1972 224452206.64681268 1973 232512695.85142875 1974 238223329.35619378 1975 244867557.86338156 1976 252857295.45200047 1977 273420111.2106126 1978 287062425.9497534 1979 303162560.5442793 1980 387913016.7805545 1981 358132997.2741636 1982 393614429.30637574 1983 463430715.0060854 1984 448090391.4152884 1985 469395891.3097836 1986 490523747.5551654 1987 474963663.7494435 1988 455420819.83542275 1989 468003933.89551294 1990 478217349.40597034 1991 368914769.890566 1992 421418351.35417527 1993 367626344.9650229 1994 127394751.83052969 1995 189050318.1274302 1996 221286427.79141113 1997 260660125.42663535 1998 287385089.8081686 1999 382589311.1418513 2000 388657263.4831241 2001 438659909.76165813 2002 470096976.7123731 2003 491993314.4367619 2004 568253601.252686 2005 620867202.8194933 2006 693697196.9135857 2007 756306715.1698071 2008 870488366.0772902 2009 881995505.1441568 2010 956079388.9699025 2011 1126392330.1589377 2012 1220148809.2227328 2013 1334234567.304659 2014 1368159992.3869221 2015 1490601778.4579103 2016 1590301185.039783 2017 1614263466.9299743 2018 1753862785.7762957 2019 2043854828.5936828 2020 1957678738.0818481 2021 2218599474.9233437 2022 2328594615.0036516 2023 2567236656.651764