F r o m | T o | |
1964/9 | 20 | 25 |
1970/2 | 25 | 26 |
1970/4 | 26 | 27 |
1970/8 | 27 | 28 |
1972/8 | 28 | 29 |
1972/11 | 29 | 30 |
1973/12 | 30 | 32 |
1974/6 | 32 | 33 |
1978/12 | 33 | 34 |
1981/9 | 34 | 34.5 |
1981/10 | 34.5 | 35 |
1984/7 | 35 | 35.5 |
1984/9 | 35.5 | 36 |
1985/6 | 36 | 36.5 |
1985/7 | 36.5 | 37 |
1987/4/25 | 37 | 37.5 |
1988/1 | 37.5 | 38 |
1990/9 | 38 | 38.5 |
1993/1 | 38.5 | |
1993/2 | 38 | |
1993/3 | 37.75 | |
1993/9/17 | 34.75 | 34.25 |
1994/9/17 | 34.25 | 33.75 |