| Value | Category | Cases | |
|---|---|---|---|
| 0 | NEVER | 750 |
11.4%
|
| 98 | DON'T KNOW | 33 |
0.5%
|
| 2012 | 2 |
0%
|
|
| 2016 | 1 |
0%
|
|
| 2017 | 5 |
0.1%
|
|
| 2018 | 3 |
0%
|
|
| 2019 | 22 |
0.3%
|
|
| 2020 | 18 |
0.3%
|
|
| 2021 | 1 |
0%
|
|
| Sysmiss | 5725 |
87.3%
|