Year including construction (constant 2015 US$) 1964 1053625988.1944366 1965 1091516255.8805177 1966 1178960331.7096567 1967 1246964811.1600428 1968 1411110030.3714569 1969 1516663624.421449 1970 1430720149.7828283 1971 1806756964.284813 1972 2647775265.090293 1973 2856563348.354772 1974 2879345191.407599 1975 2892611860.0901146 1976 2881630192.896812 1977 3251937442.6001086 1978 3595779557.9881015 1979 3722853125.200894 1980 3921341632.0241666 1981 4078222580.226337 1982 4147113775.0355287 1983 4166690168.2840137 1984 4255430522.857199 1985 4505381810.101967 1986 4684566763.344774 1987 4932336690.357381 1988 5196715534.498776 1989 5517844016.775562 1990 5775265189.804258 1991 5921641937.155424 1992 5918572527.687981 1993 5930440910.240088 1994 6043395195.773295 1995 6257026123.062599 1996 6469497494.438976 1997 6546601800.804811 1998 6562022663.259444 1999 6406921931.531789 2000 6289544959.3785305 2001 6635303617.689911 2002 6790999093.117595 2003 7206555202.966118 2004 7500061353.321673 2005 7829167178.186718 2006 8290295294.032965 2007 8798854745.955465 2008 8794676340.479654 2009 9119725678.42363 2010 9933825502.85195 2011 10758745597.782848 2012 11345816652.858154 2013 11989470141.580704 2014 12731461084.151983 2015 13248589280.582777 2016 13579449326.296295 2017 13954909759.067759 2018 14489464596.79934 2019 15062249744.232023 2020 15566529484.788507 2021 16729496884.274492 2022 17376192651.054634 2023 17758466211.385498