1971 |
65%
|
1986 |
72%
|
2020 |
56%
|
1985 |
80%
|
1984 |
80%
|
1977 |
67%
|
1992 |
54%
|
1987 |
76%
|
1985 |
77%
|
1976 |
66%
|
1979 |
69%
|
1980 |
57%
|
1979 |
63%
|
1994 |
54%
|
1968 |
72%
|
1981 |
69%
|
1994 |
68%
|
1973 |
66%
|
1977 |
68%
|
1978 |
62%
|
1979 |
62%
|
1979 |
66%
|
1972 |
70%
|
1970 |
66%
|
1969 |
66%
|
1979 |
67%
|
1980 |
63%
|
1970 |
80%
|