| Board meetings | 1975 | 3 | ||
| Board meetings | 1976 | 4 | ||
| Board meetings | 1978 | 5 | ||
| Board meetings | 1979 | 6 | ||
| Board meetings | 1980 | 9 | ||
| Board meetings | 1981 | 10 | ||
| Board meetings | 1982 | 12 | ||
| Board meetings | 1983 | 13 | ||
| Board meetings | 1984 | 14 | ||
| Board meetings | 1986-1987 | 16 | ||
| Board meetings | 1988 | 17 | ||
| Board meetings | 1989-1990 | 18 | ||
| Board meetings | 1991 | 20 | ||
| Board meetings | 1992-1993 | 21 |