Year Total 1965 129000 1966 158000 1967 111000 1968 83000 1969 100000 1970 87000 1971 100000 1972 100000 1973 67000 1974 73000 1975 93000 1976 93000 1977 100000 1978 133000 1979 200000 1980 253000 1981 270000 1982 255000 1983 255000 1984 267000 1985 900000 1986 1446000 1987 2267000 1988 2368000 1989 3554000 1990 3421900 1991 3463100 1992 4227200 1993 4927700 1994 4929500 1995 5424900 1996 6466500 1997 7975000 1998 8558400 1999 11779000 2000 13165000 2001 16713000 2002 17240000 2003 23143000 2004 21262000 2005 24366000 2006 28871000 2007 36222000 2008 31510000 2009 33172000 2010 39480000 2011 46880000 2012 53018000 2013 57014000 2014 45120000 2015 51156000 2016 62699000