9,530 1961
43,417 1962
127,297 1963
174,545 1964
419,885 1967/68
799,152 1968/69
1,594,010 1969/70
2,050,775 1970/71
2,897,506 1971/72
3,145,658 1972/73
3,140,175 1973/74
1,920,275 1974/75
1,868,753 1975/76
1,858,952 1976/77
2,003,714 1977/78
2,082,966 1978/79
2,230,568 1979/80
2,086,082 1980/81
2,017,737 1981/82
1,806,171 1982/83
1,735,706 1983/84
1,795,541 1984/85
1,635,116 1985/86
2,017,502 1986/87
2,681,158 1987/88
2,911,493 1989/89
2,694,794 1990
1,961,351 1991
1,963,345 1992
1,863,927 1993
1,816,054 1994
1,796,685 1994/95
1,907,193 1995/96
2,642,038 1996/97
3,405,596 1997/98
4,387,739 1998/99
5,466,128 1999/00
6,337,752 2000/01