Year including construction (constant 2015 US$) 1970 10243710516.006426 1971 11148238311.721899 1972 11984423663.690176 1973 12440996289.841951 1974 12461585069.39199 1975 12424981481.984098 1976 14724350749.226604 1977 15505506287.296822 1978 17019207832.351046 1979 19509547639.043873 1980 20209019312.793724 1981 20414567726.131447 1982 21870082253.871086 1983 24550082458.454678 1984 27490450012.213562 1985 26722787027.710194 1986 27939366712.636097 1987 29035690263.510838 1988 32548785843.737057 1989 33365877200.16982 1990 36158991305.58132 1991 39677982836.486244 1992 42363453509.33838 1993 45566711279.034096 1994 50107482408.11533 1995 58384934095.40508 1996 65503083399.94888 1997 69936929131.1163 1998 63428015175.545 1999 68651381720.2126 2000 76022031425.47395 2001 74119553173.0429 2002 77224826974.51332 2003 82932413799.63712 2004 88720018543.10875 2005 91499860888.27687 2006 95441229150.52487 2007 96194509273.34671 2008 95353437362.85344 2009 88991789386.95078 2010 93312949398.97487 2011 95622267631.18826 2012 100339077463.69601 2013 103998419790.17252 2014 110107608538.12604 2015 115870105036.64838 2016 120903271135.48248 2017 126544810976.53716 2018 130765275788.415 2019 134157164240.93854 2020 125989695541.71637 2021 133265855740.65665 2022 141879106714.79718 2023 143912665593.64838