| 1978 |
82%
|
| 1977 |
73%
|
| 1975 |
72%
|
| 1982 |
66%
|
| 1980 |
63%
|
| 1989 |
75%
|
| 2007 |
54%
|
| 1990 |
63%
|
| 1998 |
43%
|
| 2004 |
48%
|
| 2005 |
56%
|
| 2000 |
50%
|
| 1981 |
67%
|
