| 1982 |
79%
|
| 2008 |
72%
|
| 1985 |
67%
|
| 1988 |
59%
|
| 1993 |
72%
|
| 1967 |
77%
|
| 1951 |
85%
|
| 1989 |
58%
|
| 1980 |
48%
|
| 1997 |
51%
|
