| 1979 |
61%
|
| 1981 |
62%
|
| 1978 |
54%
|
| 1988 |
67%
|
| 1987 |
62%
|
| 1987 |
65%
|
| 1989 |
70%
|
| 1982 |
65%
|
| 1978 |
58%
|
| 1984 |
54%
|
| 1989 |
63%
|
| 1988 |
59%
|
| 2005 |
--
|
