| 1961 |
82%
|
| 1977 |
73%
|
| 1973 |
76%
|
| 1962 |
57%
|
| 1955 |
57%
|
| 1964 |
65%
|
| 1965 |
62%
|
| 1966 |
55%
|
| 1956 |
62%
|
| 1961 |
66%
|
| 1974 |
63%
|
| 1967 |
55%
|
| 1954 |
59%
|
