| 1988 |
58%
|
| 1987 |
46%
|
| 2009 |
62%
|
| 2013 |
85%
|
| 1987 |
44%
|
| 1989 |
48%
|
| 1997 |
37%
|
| 1996 |
29%
|
| 1991 |
38%
|
| 1997 |
33%
|
| 1996 |
41%
|
| 1989 |
36%
|
| 1995 |
40%
|
| 1998 |
38%
|
| 1996 |
38%
|
| 1992 |
28%
|
| 1992 |
61%
|
