| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.3%
|
| 1994 | 1 |
0.3%
|
|
| 1996 | 1 |
0.3%
|
|
| 1998 | 1 |
0.3%
|
|
| 2000 | 4 |
1.3%
|
|
| 2001 | 2 |
0.6%
|
|
| 2002 | 2 |
0.6%
|
|
| 2004 | 4 |
1.3%
|
|
| 2005 | 2 |
0.6%
|
|
| 2006 | 2 |
0.6%
|
|
| 2007 | 2 |
0.6%
|
|
| 2008 | 4 |
1.3%
|
|
| 2009 | 3 |
1%
|
|
| 2010 | 10 |
3.2%
|
|
| 2011 | 5 |
1.6%
|
|
| 2012 | 1 |
0.3%
|
|
| 2013 | 3 |
1%
|
|
| 2014 | 2 |
0.6%
|
|
| 2016 | 3 |
1%
|
|
| 2017 | 12 |
3.9%
|
|
| 2018 | 19 |
6.1%
|
|
| 2019 | 26 |
8.4%
|
|
| 2020 | 41 |
13.2%
|
|
| 2021 | 43 |
13.9%
|
|
| 2022 | 83 |
26.8%
|
|
| 2023 | 33 |
10.6%
|
|
| Sysmiss | 288 |