Year including construction (constant 2015 US$) 1967 233751556.1287217 1968 245056757.1306046 1969 259686994.58571044 1970 269994670.35559374 1971 283959926.8207816 1972 333835794.12909555 1973 329845711.8474576 1974 355448670.024073 1975 417959724.30887765 1976 404659535.92791355 1977 425274886.5762767 1978 476480760.28836685 1979 480138340.9836729 1980 487120937.673807 1981 472823179.8407917 1982 473488223.77803046 1983 488783459.83807015 1984 486455922.9628533 1985 523364049.450173 1986 514053916.5624614 1987 527686630.4582526 1988 557944668.2885478 1989 602500434.7255864 1990 658693885.5386697 1991 684629356.9284202 1992 701254637.0346802 1993 649051245.3107381 1994 664679003.3235865 1995 697168598.8944198 1996 754632749.8532453 1997 752132646.4271114 1998 768472736.5337303 1999 793591391.8563229 2000 785825926.2006338 2001 701590271.6122682 2002 650334278.89299 2003 722195600.7151482 2004 758398804.0946497 2005 813217027.04932 2006 894085887.6089733 2007 1020702432.9239781 2008 1107462139.6918287 2009 1316772484.1190112 2010 1426164249.1290946 2011 1453949209.0257986 2012 1445999887.058245 2013 1493717883.2518177 2014 1563851821.5420887 2015 1618586791.7999268 2016 1657432389.1404982 2017 1693895901.7398753 2018 1815592715.3788972 2019 1954822380.8778236 2020 1978279401.885924 2021 2015867334.5030656 2022 2033829812.8379502 2023 2065883747.289276