| 1975 |
64%
|
| 1983 |
63%
|
| 1977 |
53%
|
| 1994 |
51%
|
| 2010 |
34%
|
| 1976 |
65%
|
| 2001 |
39%
|
| 2008 |
63%
|
| 1992 |
63%
|
| 1994 |
84%
|
| 1997 |
39%
|
