Year Total 1965 3126000 1966 3561000 1967 3792000 1968 4631000 1969 4409000 1970 2150000 1971 2052000 1972 1910000 1973 1863000 1974 2009000 1975 1701000 1976 1749000 1977 1832000 1978 1733000 1979 1988000 1980 1884000 1981 1972000 1982 2086000 1983 2263000 1984 2169000 1985 2492000 1986 2739000 1987 3519000 1988 3583000 1989 3590000 1990 3461900 1991 3320900 1992 3163100 1993 3073600 1994 2941000 1995 2961100 1996 2985000 1997 2840100 1998 2859000 1999 2459300 2000 2617300 2001 2741900 2002 2637300 2003 2550800 2004 2385000 2005 2672000 2006 2382300 2007 2347900 2008 2273800 2009 1962000 2010 1983500 2011 1949300 2012 2263900 2013 2046700 2014 2030700 2015 2185500 2016 2176000