1988 |
83%
|
1985 |
76%
|
2014 |
61%
|
1990 |
61%
|
1995 |
50%
|
2009 |
77%
|
1984 |
75%
|
1999 |
81%
|
1979 |
70%
|
1978 |
65%
|
1988 |
55%
|
2008 |
40%
|
1982 |
71%
|
1984 |
71%
|
1990 |
59%
|
1985 |
78%
|
1992 |
50%
|
2011 |
37%
|
1979 |
66%
|
2023 |
55%
|
2019 |
54%
|
2016 |
47%
|
2020 |
20%
|