| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 5 |
0.7%
|
|
| 2010 | 526 |
69.8%
|
|
| 2011 | 211 |
28%
|
|
| 2012 | 8 |
1.1%
|
|
| 2013 | 3 |
0.4%
|
|
| 2016 | 1 |
0.1%
|
|
| Sysmiss | 11614 |