Year Total 1960 46980 1961 49920 1962 48130 1963 47200 1964 48000 1965 48140 1966 48910 1967 44910 1968 44810 1969 42300 1970 39340 1971 35790 1972 32610 1973 29510 1974 30640 1975 29920 1976 32990 1977 31970 1978 36170 1979 39390 1980 43290 1981 44520 1982 51790 1983 55180 1984 59300 1985 67050 1986 68880 1987 71650 1988 69710 1989 70520 1990 75200 1991 79220 1992 80210 1993 87660 1994 90490 1995 98550 1996 101700 1997 106200 1998 109100 1999 104500 2000 105800 2001 104800 2002 96930 2003 84080 2004 95090 2005 100500 2006 101400 2007 90600 2008 88690 2009 93790 2010 95060