| 1960 |
91%
|
| 1985 |
75%
|
| 2016 |
79%
|
| 1960 |
85%
|
| 1968 |
74%
|
| 1979 |
71%
|
| 1984 |
67%
|
| 1971 |
79%
|
| 1992 |
41%
|
| 1985 |
72%
|
| 1983 |
66%
|
| 1973 |
69%
|
| 1992 |
54%
|
| 1995 |
29%
|
| 1983 |
54%
|
