| Value | Category | Cases | |
|---|---|---|---|
| -999 | 73 |
1.2%
|
|
| 2012 | 68 |
1.1%
|
|
| 2013 | 2089 |
35.3%
|
|
| 2014 | 3695 |
62.4%
|
|
| Sysmiss | 3367 |