1973 |
66%
|
1977 |
68%
|
1988 |
56%
|
1988 |
56%
|
2005 |
64%
|
1986 |
64%
|
2005 |
64%
|
2005 |
64%
|
2005 |
63%
|
2005 |
63%
|
2005 |
63%
|
1986 |
56%
|
1984 |
66%
|