1993 |
78%
|
1989 |
76%
|
1967 |
75%
|
1990 |
80%
|
1990 |
60%
|
1995 |
77%
|
1989 |
54%
|
1977 |
63%
|
1993 |
84%
|
2010 |
74%
|
1986 |
74%
|
1986 |
78%
|
2010 |
41%
|
2003 |
27%
|
1982 |
53%
|
1971 |
67%
|
1991 |
39%
|
2018 |
36%
|