| 1980 |
87%
|
| 1983 |
83%
|
| 2005 |
71%
|
| 2007 |
73%
|
| 2010 |
77%
|
| 1964 |
78%
|
| 1985 |
62%
|
| 1987 |
37%
|
| 1985 |
61%
|
| 1970 |
75%
|
| 1981 |
80%
|
| 1978 |
72%
|
| 1980 |
64%
|
