| 1958 |
24%
|
| 1969 |
49%
|
| 1968 |
47%
|
| 1957 |
39%
|
| 1964 |
42%
|
| 1963 |
49%
|
| 1957 |
46%
|
| 1967 |
55%
|
| 1969 |
49%
|
| 1965 |
54%
|
