| Year | Volume | Number | Holdings | ||
|---|---|---|---|---|---|
| 2002/2004 | - | Yes | |||
| 2000/2001? | - | No | |||
| 1998/2000 | - | Yes | |||
| 1995/1998 | - | Yes | |||
| 1993/1995 | - | Yes | |||
| 1991/1993 | - | Yes | |||
| 1990/1991 | - | Yes | |||
| 1989 | - | Yes | |||
| 1986/1988 | - | Yes | |||
| 1985/1986 | - | Yes | |||
| 1984/1985 | - | Yes | |||
| 1983/1984 | - | No | |||
| 1981/1982 | - | Yes | |||
| 1980/1981 | - | Yes | |||
| 1977/1979 | - | Yes | |||
| 1975/1977 | - | Yes |