| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 19 |
79.2%
|
|
| 2012 | 1 |
4.2%
|
|
| 2013 | 1 |
4.2%
|
|
| 2014 | 1 |
4.2%
|
|
| 2015 | 1 |
4.2%
|
|
| 9999 | 1 |
4.2%
|
|
| Sysmiss | 1539 |