| 1983 |
83%
|
| 2004 |
66%
|
| 1988 |
72%
|
| 2005 |
68%
|
| 1991 |
67%
|
| 1997 |
67%
|
| 1998 |
67%
|
| 1999 |
67%
|
| 1996 |
67%
|
| 1993 |
80%
|
| 1996 |
46%
|
| 2000 |
56%
|
| 1988 |
64%
|
| 1996 |
55%
|
| 1988 |
66%
|
| 1986 |
46%
|
| 1996 |
70%
|
| 1986 |
55%
|
| 1987 |
27%
|
| 2010 |
74%
|
| 1987 |
74%
|
| 1987 |
54%
|
| 1998 |
39%
|
| 2006 |
39%
|
| 1993 |
42%
|
| 1999 |
44%
|
| 1985 |
45%
|
| 2000 |
49%
|
| 2005 |
36%
|
| 2012 |
31%
|
