| 1988 |
83%
|
| 1987 |
79%
|
| 1995 |
56%
|
| 1997 |
40%
|
| 2005 |
23%
|
| 2011 |
48%
|
| 2011 |
58%
|
| 1992 |
60%
|
| 1972 |
62%
|
