1979 |
62%
|
1981 |
77%
|
1991 |
45%
|
1991 |
80%
|
1985 |
53%
|
1992 |
60%
|
1982 |
59%
|
1978 |
62%
|
1979 |
58%
|
1981 |
51%
|
1980 |
46%
|
1992 |
43%
|