| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 1 |
0.2%
|
|
| 2009 | 72 |
16.8%
|
|
| 2010 | 142 |
33.2%
|
|
| 2011 | 107 |
25%
|
|
| 2012 | 86 |
20.1%
|
|
| 2013 | 15 |
3.5%
|
|
| 2014 | 5 |
1.2%
|
|
| Sysmiss | 2136 |