| Value | Category | Cases | |
|---|---|---|---|
| 0 | DON'T KNOW | 61 |
1.3%
|
| 2014 | 1 |
0%
|
|
| 2017 | 3 |
0.1%
|
|
| 2018 | 4 |
0.1%
|
|
| 2019 | 7 |
0.1%
|
|
| 2020 | 54 |
1.1%
|
|
| 2021 | 84 |
1.8%
|
|
| Sysmiss | 4512 |
95.5%
|