Year current LCU 1972 1800000 1973 1800000 1974 4400000 1975 21800000 1976 8300000 1977 9400000 1978 7400000 1979 7000000 1980 9700000 1981 12800000 1982 11000000 1983 10900000 1984 14000000 1985 12000000 1986 8000000 1987 10000000 1988 7700000 1989 9500000 1990 9400000 1991 11700000 1992 9100000 1993 9100000 1994 9700000 1995 8600000 1996 8500000 1997 10200000 1998 6700000 1999 6200000 2000 11200000 2001 9300000 2002 9500000 2003 8700000 2005 7400000 2006 11000000 2007 22100000 2008 25100000 2009 15700000 2010 17500000 2011 18000000 2012 20300000