1986 |
56%
|
1989 |
46%
|
1992 |
41%
|
1987 |
51%
|
1988 |
49%
|
1990 |
59%
|
1994 |
28%
|
2010 |
31%
|
2011 |
25%
|
1991 |
43%
|
1994 |
39%
|
2008 |
42%
|
2015 |
31%
|
1993 |
48%
|
1995 |
41%
|
2000 |
34%
|
1987 |
47%
|
1990 |
44%
|
1989 |
40%
|
1988 |
42%
|
2009 |
37%
|
1990 |
44%
|
1991 |
47%
|
2003 |
33%
|
1993 |
43%
|
1997 |
38%
|
2022 |
37%
|
1995 |
38%
|
2022 |
21%
|
2011 |
45%
|
2019 |
55%
|
2011 |
42%
|
2005 |
42%
|
2003 |
37%
|
1990 |
37%
|