| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 12 |
3.4%
|
|
| 2010 | 119 |
34%
|
|
| 2011 | 102 |
29.1%
|
|
| 2012 | 87 |
24.9%
|
|
| 2013 | 25 |
7.1%
|
|
| 2014 | 5 |
1.4%
|
|
| Sysmiss | 2214 |