| Value | Category | Cases | |
|---|---|---|---|
| 2013 | 1 |
25%
|
|
| 2017 | 1 |
25%
|
|
| 2022 | 1 |
25%
|
|
| 2025 | 1 |
25%
|
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 42008 |