| Value | Category | Cases | |
|---|---|---|---|
| 0 | 4 |
0.3%
|
|
| 203 | 1 |
0.1%
|
|
| 2011 | 3 |
0.2%
|
|
| 2012 | 222 |
17.4%
|
|
| 2013 | 1047 |
82%
|
|
| Sysmiss | 936 |