| 1959 |
91%
|
| 1978 |
72%
|
| 1990 |
54%
|
| 1998 |
71%
|
| 1950 |
78%
|
| 1991 |
49%
|
| 1975 |
64%
|
| 1995 |
33%
|
| 1985 |
72%
|
| 1951 |
63%
|
| 1961 |
71%
|
