| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 10 |
2.6%
|
|
| 2010 | 107 |
28%
|
|
| 2011 | 118 |
30.9%
|
|
| 2012 | 97 |
25.4%
|
|
| 2013 | 43 |
11.3%
|
|
| 2014 | 7 |
1.8%
|
|
| Sysmiss | 2182 |