Year Total 1965 8861200 1966 8073000 1967 7762500 1968 7356500 1969 6257800 1970 4585800 1971 3463300 1972 2961700 1973 3009500 1974 2866200 1975 2412300 1976 3009500 1977 3152800 1978 3606600 1979 3439400 1980 3988700 1981 4418600 1982 5111300 1983 5278500 1984 6377200 1985 6353300 1986 6544400 1987 6902600 1988 8264100 1989 8192400 1990 8741800 1991 8049100 1992 8025200 1993 8096900 1994 8622300 1995 8909000 1996 8598500 1997 8359600 1998 8526800 1999 7475900 2000 7762500 2001 8264100 2002 8311800 2003 8598500 2004 8479000 2005 8096900 2006 7714700 2007 8407400 2008 7953600 2009 7499800 2010 7547500 2011 7452000 2012 8192400 2013 8192400 2014 9052300 2015 11011000 2016 10270000