| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 253 |
6.7%
|
|
| 2017 | 416 |
11.1%
|
|
| 2018 | 2 |
0.1%
|
|
| 9999 | NO RESPONDE | 1 |
0%
|
| Sysmiss | 3085 |
82.1%
|