| 1992 |
57%
|
| 1997 |
53%
|
| 1993 |
49%
|
| 1978 |
54%
|
| 1982 |
58%
|
| 2000 |
41%
|
| 2001 |
41%
|
| 2006 |
67%
|
| 2003 |
40%
|
| 2011 |
44%
|
| 2014 |
44%
|
| 2010 |
76%
|
