| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 2 |
0.3%
|
|
| 2003 | 3 |
0.4%
|
|
| 2004 | 15 |
2.2%
|
|
| 2005 | 20 |
3%
|
|
| 2006 | 28 |
4.1%
|
|
| 2007 | 25 |
3.7%
|
|
| 2008 | 40 |
5.9%
|
|
| 2009 | 41 |
6.1%
|
|
| 2010 | 65 |
9.6%
|
|
| 2011 | 54 |
8%
|
|
| 2012 | 56 |
8.3%
|
|
| 2013 | 41 |
6.1%
|
|
| 2014 | 57 |
8.4%
|
|
| 2015 | 82 |
12.1%
|
|
| 2016 | 57 |
8.4%
|
|
| 2017 | 27 |
4%
|
|
| 3333 | Missing | 3 |
0.4%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 2 |
0.3%
|
| 9999 | Don't know | 57 |
8.4%
|
| Sysmiss | 14318 |