| 1991 |
85%
|
| 2008 |
66%
|
| 1978 |
82%
|
| 1982 |
72%
|
| 1993 |
60%
|
| 1994 |
39%
|
| 1988 |
65%
|
| 2010 |
74%
|
| 1985 |
74%
|
| 1981 |
63%
|
| 2007 |
74%
|
