Year including construction (current LCU) 1975 6470855000 1976 7049151000 1977 7604866000 1978 8443593000 1979 9994854000 1980 11458000000 1981 12784000000 1982 14015000000 1983 15566000000 1984 17131000000 1985 18012000000 1986 18886000000 1987 20638000000 1988 23084000000 1989 26108000000 1990 26581000000 1991 23040000000 1992 22262000000 1993 23106000000 1994 25611000000 1995 29063000000 1996 29441000000 1997 32164000000 1998 36780000000 1999 38628000000 2000 43102000000 2001 44757000000 2002 44709000000 2003 44810000000 2004 46632000000 2005 48174000000 2006 52286000000 2007 57375000000 2008 57431000000 2009 46637000000 2010 49215000000 2011 49561000000 2012 47000000000 2013 47651000000 2014 47788000000 2015 49265000000 2016 51111000000 2017 55219000000 2018 56022000000 2019 57274000000 2020 57216000000 2021 60136000000 2022 67291000000 2023 68109000000