| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
0.2%
|
|
| 2001 | 37 |
6.1%
|
|
| 2002 | 28 |
4.6%
|
|
| 2003 | 33 |
5.4%
|
|
| 2004 | 36 |
5.9%
|
|
| 2005 | 29 |
4.8%
|
|
| 2006 | 20 |
3.3%
|
|
| 2007 | 31 |
5.1%
|
|
| 2008 | 25 |
4.1%
|
|
| 2009 | 32 |
5.3%
|
|
| 2010 | 46 |
7.6%
|
|
| 2011 | 57 |
9.4%
|
|
| 2012 | 51 |
8.4%
|
|
| 2013 | 47 |
7.8%
|
|
| 9999 | NO RESPONSE | 1 |
0.2%
|
| Sysmiss | 132 |
21.8%
|