Year Total 1960 3943000 1961 3588000 1962 3350000 1963 3937000 1964 3353000 1965 3666000 1966 3759000 1967 3641000 1968 3670000 1969 3540000 1970 3471000 1971 3360000 1972 3555000 1973 3226000 1974 3250000 1975 3527000 1976 3369000 1977 4397000 1978 3912000 1979 3951000 1980 3890000 1981 3700000 1982 3565000 1983 3564000 1984 3646000 1985 3533000 1986 3534000 1987 3397000 1988 3498000 1989 2928000 1990 2719000 1991 3632000 1992 3629000 1993 3562000 1994 3840000 1995 3249000 1996 3615000 1997 3577000 1998 3544000 1999 3901000 2000 3801000 2001 4025000 2002 3398000 2003 3153000 2004 3640000 2005 3101000 2006 3181000 2007 2822000 2008 3579000 2009 4225000 2010 4395000 2011 3985000