Year including construction (constant 2010 US$) 1965 169936428.577899 1966 173722704.307709 1967 176960562.723628 1968 180931558.562617 1969 185005581.594754 1970 190129383.166676 1971 195383941.850521 1972 200813103.357491 1973 208024669.136481 1974 213133863.889006 1975 219078328.257291 1976 226226593.915726 1977 244623752.520105 1978 256829271.020906 1979 271233754.00853 1980 347058368.884615 1981 320414754.090902 1982 352159313.80396 1983 414622611.47111 1984 400897916.88187 1985 419959540.810929 1986 438862230.350139 1987 424940920.497482 1988 407456311.214889 1989 418714183.086439 1990 427851930.925938 1991 330061000.164191 1992 377034951.975666 1993 328908271.036751 1994 113977651.831206 1995 169139709.724232 1996 197980741.517379 1997 233207636.836768 1998 257117952.120209 1999 342295351.110339 2000 347722631.62092 2001 392459957.399726 2002 420586729.310168 2003 440176855.946493 2004 508405122.141648 2005 555477293.058226 2006 620635696.401543 2007 676652228.752249 2008 778808404.746984 2009 789102885.091595 2010 855384271.353139 2011 1007760074.15712 2012 1091642383.64456 2013 1193712501.9031 2014 1325143826.8126 2015 1443735619.63819 2016 1540300864.34531 2017 1605610221.42261 2018 1776175243.78026