| Value | Category | Cases | |
|---|---|---|---|
| 2001 | 9 |
0.5%
|
|
| 2002 | 128 |
7.7%
|
|
| 2003 | 133 |
8%
|
|
| 2004 | 130 |
7.8%
|
|
| 2005 | 108 |
6.5%
|
|
| 2006 | 113 |
6.8%
|
|
| 2007 | 94 |
5.6%
|
|
| 2008 | 128 |
7.7%
|
|
| 2009 | 106 |
6.4%
|
|
| 2010 | 141 |
8.5%
|
|
| 2011 | 130 |
7.8%
|
|
| 2012 | 144 |
8.6%
|
|
| 2013 | 128 |
7.7%
|
|
| 2014 | 128 |
7.7%
|
|
| 9998 | DK | 5 |
0.3%
|
| 9999 | NO RESPONSE | 3 |
0.2%
|
| Sysmiss | 38 |
2.3%
|