1992 |
90%
|
2009 |
77%
|
1987 |
80%
|
1986 |
80%
|
1979 |
65%
|
1995 |
67%
|
1977 |
70%
|
1974 |
84%
|
1987 |
70%
|
1986 |
77%
|
2010 |
86%
|
1977 |
64%
|
1989 |
62%
|
1991 |
83%
|
1991 |
83%
|
1992 |
83%
|
1992 |
70%
|
1993 |
70%
|
1981 |
66%
|
1980 |
66%
|
1965 |
72%
|
1986 |
77%
|
1995 |
55%
|
1990 |
51%
|
1986 |
57%
|
1987 |
41%
|