| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 1 |
1.7%
|
|
| 2002 | 1 |
1.7%
|
|
| 2004 | 3 |
5.2%
|
|
| 2005 | 1 |
1.7%
|
|
| 2006 | 5 |
8.6%
|
|
| 2007 | 3 |
5.2%
|
|
| 2008 | 4 |
6.9%
|
|
| 2009 | 4 |
6.9%
|
|
| 2010 | 3 |
5.2%
|
|
| 2011 | 8 |
13.8%
|
|
| 2012 | 11 |
19%
|
|
| 2013 | 11 |
19%
|
|
| 2014 | 3 |
5.2%
|
|
| Sysmiss | .don't know | 0 | |
| Sysmiss | .qre refused | 0 | |
| Sysmiss | .refusal | 0 | |
| Sysmiss | .skip | 0 | |
| Sysmiss | .x. censored | 0 | |
| Sysmiss | 1376 |