Year including construction (constant LCU) 1960 2859545018.60971 1961 3088950085.2198 1962 3105628967.28626 1963 3266737535.6652 1964 3744075782.99721 1965 4138873712.85919 1966 4050022387.86772 1967 4401594800.41799 1968 4450565909.07339 1969 4724240042.469299 1970 5114503716.19414 1971 5972082415.83379 1972 6587281204.861489 1973 8539103114.99811 1974 9174504640.988071 1975 10056102677.9486 1976 10887436142.476398 1977 10559302162.2138 1978 11393681306.401901 1979 11508385619.8823 1980 11247230804.3057 1981 11333261753.9255 1982 11302715378.5091 1983 11644246820.4146 1984 12012520252.6707 1985 12564210377.4096 1986 13044903863.400799 1987 12045356316.8513 1988 13614496178.299799 1989 13565226473.5992 1990 13865911333.7863 1991 14185383314.230799 1992 14465380897.5096 1993 15017098167.3435 1994 16099067723.131 1995 16043462353.254799 1996 15783982390.040401 1997 16060333029.8045 1998 16134025176.486801 1999 15108209321.4947 2000 16763505000.000002 2001 17518741000 2002 18059777000 2003 18526603000 2004 21429545000 2005 22243340000 2006 23207878000 2007 22943724000 2008 24263784000 2009 24162948000 2010 24588038000 2011 27110211000 2012 28759352000 2013 31283843000 2014 31736953000 2015 30747996000 2016 30530382000 2017 31444791000 2018 30109962000 2019 29667248000 2020 26331874000 2021 29611220000 2022 31063811000 2023 30831157000