| Value | Category | Cases | |
|---|---|---|---|
| -95 | Missing | 0 |
0%
|
| 2005 | 9 |
5.7%
|
|
| 2006 | 29 |
18.4%
|
|
| 2007 | 15 |
9.5%
|
|
| 2008 | 33 |
20.9%
|
|
| 2009 | 21 |
13.3%
|
|
| 2010 | 40 |
25.3%
|
|
| 2011 | 11 |
7%
|
|
| Sysmiss | 52 |