| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 1 |
0.1%
|
|
| 2010 | 2 |
0.2%
|
|
| 2011 | 1 |
0.1%
|
|
| 2012 | 146 |
12.4%
|
|
| 2013 | 593 |
50.3%
|
|
| 2014 | 436 |
37%
|
|
| Sysmiss | 1385 |