| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 8 |
1.1%
|
|
| 2003 | 15 |
2%
|
|
| 2004 | 23 |
3.1%
|
|
| 2005 | 28 |
3.8%
|
|
| 2006 | 26 |
3.5%
|
|
| 2007 | 33 |
4.5%
|
|
| 2008 | 32 |
4.4%
|
|
| 2009 | 38 |
5.2%
|
|
| 2010 | 48 |
6.5%
|
|
| 2011 | 34 |
4.6%
|
|
| 2012 | 38 |
5.2%
|
|
| 2013 | 42 |
5.7%
|
|
| 2014 | 50 |
6.8%
|
|
| 2015 | 43 |
5.9%
|
|
| 2016 | 65 |
8.9%
|
|
| 2017 | 29 |
4%
|
|
| 3333 | Missing | 3 |
0.4%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 178 |
24.3%
|
| Sysmiss | 266 |