Year Total 1965 10910000 1966 10463000 1967 9077000 1968 8959000 1969 9093000 1970 9241000 1971 8945000 1972 8693000 1973 8738000 1974 8334000 1975 7940000 1976 8045000 1977 8183000 1978 8175000 1979 8238000 1980 8078000 1981 8117000 1982 8463000 1983 7956000 1984 7742000 1985 7604000 1986 7515000 1987 7511000 1988 7087000 1989 6348000 1990 6231300 1991 6047200 1992 5234700 1993 4862300 1994 4729200 1995 4622700 1996 4742800 1997 4599800 1998 4279900 1999 4159900 2000 3850200 2001 3620200 2002 3621000 2003 3747400 2004 3374500 2005 3031200 2006 3077000 2007 3134700 2008 3053500 2009 2564900 2010 2730400 2011 2708500 2012 2596600 2013 2261100 2014 2218000 2015 2363000 2016 2284400