| 1979 |
74%
|
| 1985 |
63%
|
| 1981 |
69%
|
| 1980 |
65%
|
| 1981 |
62%
|
| 1971 |
67%
|
| 1982 |
51%
|
| 1982 |
63%
|
| 1971 |
65%
|
| 1986 |
59%
|
| 1989 |
62%
|
| 1977 |
68%
|
| 1977 |
63%
|
| 1980 |
55%
|
| 1982 |
52%
|
| 1984 |
27%
|
| 1986 |
53%
|
| 1982 |
48%
|
| 1984 |
57%
|
| 1986 |
48%
|
| 1985 |
51%
|
| 2012 |
47%
|
| 1983 |
46%
|
| 1986 |
56%
|
| 1987 |
47%
|
| 1982 |
44%
|
| 1987 |
38%
|
| 1988 |
50%
|
