| Value | Category | Cases | |
|---|---|---|---|
| 5 |
16.7%
|
||
| 1995 | 1 |
3.3%
|
|
| 2004 | 2 |
6.7%
|
|
| 2005 | 3 |
10%
|
|
| 2007 | 1 |
3.3%
|
|
| 2008 | 4 |
13.3%
|
|
| 2009 | 2 |
6.7%
|
|
| 2010 | 3 |
10%
|
|
| 2011 | 5 |
16.7%
|
|
| 2012 | 1 |
3.3%
|
|
| 2013 | 1 |
3.3%
|
|
| Don't know | 2 |
6.7%
|