2004 |
80%
|
2018 |
75%
|
1982 |
78%
|
2007 |
57%
|
2015 |
60%
|
2007 |
78%
|
1997 |
71%
|
2018 |
61%
|
1986 |
50%
|
1980 |
62%
|
1983 |
71%
|
1977 |
65%
|
1980 |
65%
|
1988 |
55%
|
1989 |
59%
|
1978 |
70%
|
2023 |
56%
|
1974 |
48%
|
1973 |
56%
|
1981 |
61%
|
1982 |
61%
|
1981 |
61%
|