| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 2 |
0.1%
|
|
| 2018 | 177 |
9.9%
|
|
| 2019 | 202 |
11.3%
|
|
| 2020 | 14 |
0.8%
|
|
| 9999 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 1385 |
77.8%
|