Year Total 1965 8037000 1966 8551000 1967 9263000 1968 10280000 1969 11167000 1970 12523000 1971 13281000 1972 13612000 1973 14650000 1974 13031000 1975 12511000 1976 12993000 1977 13056000 1978 13421000 1979 12875000 1980 12846000 1981 11865000 1982 11209000 1983 12262000 1984 11824000 1985 12021000 1986 13178000 1987 12396000 1988 12430000 1989 11923000 1990 12757000 1991 12973000 1992 13141000 1993 12312000 1994 12732000 1995 11797000 1996 12215000 1997 12836000 1998 13003000 1999 12602000 2000 12209000 2001 13079000 2002 12396000 2003 12062000 2004 12016000 2005 12239000 2006 12551000 2007 11310000 2008 12062000 2009 12255000 2010 11381000 2011 11038000 2012 11246000 2013 11779000 2014 10575000 2015 10734000 2016 10178000