| Value | Category | Cases | |
|---|---|---|---|
| 1999 | 1 |
0%
|
|
| 2000 | 10 |
0.5%
|
|
| 2001 | 12 |
0.6%
|
|
| 2002 | 17 |
0.8%
|
|
| 2003 | 21 |
1%
|
|
| 2004 | 20 |
1%
|
|
| 2005 | 33 |
1.6%
|
|
| 2006 | 42 |
2%
|
|
| 2007 | 52 |
2.5%
|
|
| 2008 | 95 |
4.6%
|
|
| 2009 | 91 |
4.4%
|
|
| 2010 | 160 |
7.7%
|
|
| 2011 | 145 |
7%
|
|
| 2012 | 255 |
12.3%
|
|
| 2013 | 371 |
17.9%
|
|
| 2014 | 459 |
22.1%
|
|
| 2015 | 250 |
12.1%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 40 |
1.9%
|
| Sysmiss | 11897 |