| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 |
1.2%
|
|
| 2003 | 1 |
1.2%
|
|
| 2004 | 5 |
6%
|
|
| 2005 | 1 |
1.2%
|
|
| 2006 | 5 |
6%
|
|
| 2007 | 1 |
1.2%
|
|
| 2008 | 3 |
3.6%
|
|
| 2009 | 6 |
7.2%
|
|
| 2010 | 4 |
4.8%
|
|
| 2011 | 4 |
4.8%
|
|
| 2012 | 8 |
9.6%
|
|
| 2013 | 3 |
3.6%
|
|
| 2014 | 2 |
2.4%
|
|
| 2015 | 9 |
10.8%
|
|
| 2016 | 7 |
8.4%
|
|
| 2017 | 1 |
1.2%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 22 |
26.5%
|
| Sysmiss | 916 |