| Value | Category | Cases | |
|---|---|---|---|
| 1992 | 1 |
12.5%
|
|
| 2015 | 1 |
12.5%
|
|
| 2017 | 1 |
12.5%
|
|
| 2020 | 1 |
12.5%
|
|
| 2021 | 2 |
25%
|
|
| 2022 | 1 |
12.5%
|
|
| 2023 | 1 |
12.5%
|
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 42004 |