| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 19 |
5%
|
|
| 2010 | 124 |
32.5%
|
|
| 2011 | 106 |
27.7%
|
|
| 2012 | 97 |
25.4%
|
|
| 2013 | 29 |
7.6%
|
|
| 2014 | 7 |
1.8%
|
|
| Sysmiss | 2182 |