| 1996 |
64%
|
| 1999 |
72%
|
| 1999 |
68%
|
| 1980 |
72%
|
| 2001 |
53%
|
| 1999 |
56%
|
| 1988 |
60%
|
| 1977 |
70%
|
| 1997 |
36%
|
