Year including construction (constant 2015 US$) 1965 2516351324.7170615 1966 2844082484.353388 1967 3018018476.9278903 1968 3083955087.1504483 1969 3154618617.950229 1970 3269811208.081225 1971 3418674060.756942 1972 3670466531.6941648 1973 3804155756.0023317 1974 3955416171.0277095 1975 4015495804.4496613 1976 4329628541.985669 1977 4809374008.093747 1978 4998483889.351194 1979 4534494651.458128 1980 3606824917.0745244 1981 3105055198.11695 1982 2913102083.8352084 1983 2930228384.8239627 1984 2891694012.4123607 1985 2891043208.2442355 1986 2936702063.582722 1987 3060354847.0875425 1988 3183904803.530225 1989 3270907162.2932005 1990 3340968048.4638762 1991 2940267920.0247765 1992 3069609921.753246 1993 3374682982.0036554 1994 3623537150.590703 1995 3793458767.769227 1996 3915455745.3249435 1997 4124067556.810114 1998 4401825570.013928 1999 4448194969.123284 2000 4444131785.385428 2001 4630612717.962587 2002 4772474182.441567 2003 4861556254.289935 2004 4730771795.528594 2005 4806428959.782359 2006 5019573356.674558 2007 5135342521.771398 2008 5414646343.771538 2009 5094976460.253321 2010 5239784691.006144 2011 5569714098.570263 2012 5686308489.275005 2013 5727946343.386591 2014 5835115470.245529 2015 5927280000 2016 6005803701.374399 2017 6140978975.349852 2018 6232249481.714114 2019 6505617963.95603 2020 5760486372.679036 2021 6317877367.118327 2022 6536209143.073605 2023 6805651644.621336