| 1994 |
73%
|
| 1989 |
54%
|
| 1984 |
60%
|
| 1978 |
70%
|
| 2006 |
39%
|
| 2000 |
49%
|
| 2005 |
41%
|
| 1987 |
46%
|
| 1995 |
43%
|
| 2006 |
74%
|
