| Value | Category | Cases | |
|---|---|---|---|
| 1987 | 1 |
1.9%
|
|
| 1990 | 2 |
3.8%
|
|
| 1993 | 1 |
1.9%
|
|
| 1994 | 1 |
1.9%
|
|
| 1996 | 1 |
1.9%
|
|
| 2000 | 1 |
1.9%
|
|
| 2002 | 1 |
1.9%
|
|
| 2003 | 2 |
3.8%
|
|
| 2004 | 1 |
1.9%
|
|
| 2005 | 3 |
5.7%
|
|
| 2006 | 1 |
1.9%
|
|
| 2007 | 1 |
1.9%
|
|
| 2008 | 1 |
1.9%
|
|
| 2010 | 1 |
1.9%
|
|
| 2011 | 2 |
3.8%
|
|
| 2012 | 1 |
1.9%
|
|
| 2013 | 1 |
1.9%
|
|
| 2015 | 2 |
3.8%
|
|
| 2016 | 1 |
1.9%
|
|
| 2017 | 4 |
7.5%
|
|
| 2019 | 3 |
5.7%
|
|
| 2020 | 7 |
13.2%
|
|
| 2021 | 4 |
7.5%
|
|
| 2022 | 2 |
3.8%
|
|
| 2023 | 1 |
1.9%
|
|
| 2024 | 3 |
5.7%
|
|
| 2025 | 1 |
1.9%
|
|
| 9998 | Don't know | 3 |
5.7%
|
| Sysmiss | 41959 |