| 1971 |
61%
|
| 1972 |
59%
|
| 1971 |
50%
|
| 2010 |
73%
|
| 1981 |
55%
|
| 1996 |
46%
|
| 1994 |
37%
|
| 1972 |
47%
|
| 1976 |
46%
|
| 1978 |
46%
|
