| 1959 |
67%
|
| 1960 |
66%
|
| 1968 |
65%
|
| 1961 |
65%
|
| 1970 |
63%
|
| 1970 |
61%
|
| 1958 |
67%
|
| 1962 |
64%
|
| 1964 |
56%
|
| 1967 |
55%
|
| 1976 |
72%
|
| 1975 |
55%
|
| 2006 |
81%
|
