Year including construction (constant 2010 US$) 1970 482036625.050781 1971 447103779.388107 1972 509938653.526847 1973 495457539.313264 1974 635477789.583018 1975 549264881.785887 1976 481300377.875468 1977 549933507.687205 1978 515449292.268982 1979 555806465.169568 1980 548704119.739407 1981 653501513.047485 1982 878213866.040765 1983 843898837.217385 1984 915071325.048033 1985 998952738.363675 1986 785436105.704392 1987 784165177.291772 1988 831189651.221024 1989 896057990.399604 1990 969531284.940137 1991 1013518451.01481 1992 1105266209.92434 1993 1085441655.73324 1994 1137910960.8972 1995 1182530583.38172 1996 1273541440.68334 1997 1318222885.20184 1998 1315749276.27973 1999 1338771413.32875 2000 1431527478.09167 2001 1528489107.50379 2002 1541339443.9319 2003 1535732024.39963 2004 1558862629.97023 2005 1634562793.65584 2006 1658861611.629 2007 1620310602.34466 2008 1490405383.18047 2009 1494143662.86865 2010 1542974941.29548 2011 1515405128.59516 2012 1553021567.95746 2013 1688300564.1734 2014 1806290016.83152 2015 1988764794.11071 2016 2039983431.40339 2017 2253285373.72562 2018 2392194107.51078