| Value | Category | Cases | |
|---|---|---|---|
| 1982 | 1 |
4%
|
|
| 1990 | 3 |
12%
|
|
| 1994 | 1 |
4%
|
|
| 1995 | 2 |
8%
|
|
| 1996 | 1 |
4%
|
|
| 1998 | 1 |
4%
|
|
| 2006 | 3 |
12%
|
|
| 2010 | 1 |
4%
|
|
| 2013 | 1 |
4%
|
|
| 2017 | 1 |
4%
|
|
| 2020 | 1 |
4%
|
|
| 2021 | 1 |
4%
|
|
| 2023 | 3 |
12%
|
|
| 2024 | 2 |
8%
|
|
| 2025 | 1 |
4%
|
|
| 9998 | Don't know | 2 |
8%
|
| Sysmiss | 41987 |