| 1989 |
74%
|
| 2002 |
60%
|
| 2017 |
46%
|
| 2004 |
59%
|
| 1993 |
59%
|
| 2018 |
45%
|
| 1992 |
48%
|
| 2000 |
56%
|
| 1976 |
65%
|
| 2004 |
51%
|
| 1990 |
52%
|
| 2006 |
80%
|
