Year Total 1965 24657000 1966 24345000 1967 25048000 1968 26219000 1969 26477000 1970 27352000 1971 29250000 1972 29457000 1973 31378000 1974 32871000 1975 35083000 1976 36835000 1977 38159000 1978 37062000 1979 39531000 1980 42711000 1981 50633000 1982 55511000 1983 56380000 1984 60751000 1985 62388000 1986 63256000 1987 64366000 1988 69641000 1989 64994000 1990 67317000 1991 66101000 1992 66353000 1993 66615000 1994 68756000 1995 71343000 1996 72443000 1997 74040000 1998 71817000 1999 75039000 2000 74632000 2001 74898000 2002 71247000 2003 79189000 2004 86768000 2005 79988000 2006 81473000 2007 83661000 2008 93336000 2009 93824000 2010 92823000 2011 90512000 2012 88339000 2013 88613000 2014 89839000 2015 83350000 2016 85108000