| 1978 |
82%
|
| 2003 |
72%
|
| 2005 |
60%
|
| 1977 |
64%
|
| 1978 |
70%
|
| 1981 |
63%
|
| 2010 |
26%
|
| 2006 |
67%
|
| 2017 |
53%
|
| 1971 |
37%
|
