Year | Value | 2004 | 99,598 | 2003 | 90,641 | 2002 | 97,713 | 2001 | 110,492 | 2000 | 109,369 | 1999 | 106,300 | 1998 | 114,600 | 1997 | 118,600 | 1996 | 107,800 | 1995 | 101,600 | 1994 | 97,200 | 1993 | 101,900 | 1992 | 91,100 | 1991 | 87,400 | 1990 | 90,600 | 1989 | 87,500 | 1988 | 84,600 | 1987 | 85,000 | 1986 | 82,800 | 1985 | 75,400 | 1984 | 62,000 | 1983 | 77,700 | 1982 | 69,200 | 1981 | 64,000 | 1980 | 69,700 | 1979 | 74,300 | 1978 | 70,000 | 1977 | 67,600 | 1976 | 67,700 | 1975 | 66,100 | 1974 | 67,200 | 1973 | 70,700 | 1972 | 69,800 | 1971 | 64,700 | 1970 | 50,600 |
|