| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 1 |
0%
|
|
| 2017 | 205 |
3.3%
|
|
| 2018 | 699 |
11.2%
|
|
| 2019 | 83 |
1.3%
|
|
| 9999 | NO RESPONSE | 6 |
0.1%
|
| Sysmiss | 5229 |
84%
|