| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 103 |
19.9%
|
| 1980 | 1 |
0.2%
|
|
| 1984 | 1 |
0.2%
|
|
| 1985 | 1 |
0.2%
|
|
| 1996 | 1 |
0.2%
|
|
| 1997 | 1 |
0.2%
|
|
| 1998 | 1 |
0.2%
|
|
| 1999 | 2 |
0.4%
|
|
| 2000 | 4 |
0.8%
|
|
| 2001 | 2 |
0.4%
|
|
| 2002 | 1 |
0.2%
|
|
| 2004 | 1 |
0.2%
|
|
| 2005 | 3 |
0.6%
|
|
| 2008 | 1 |
0.2%
|
|
| 2009 | 2 |
0.4%
|
|
| 2010 | 5 |
1%
|
|
| 2011 | 1 |
0.2%
|
|
| 2012 | 4 |
0.8%
|
|
| 2013 | 7 |
1.4%
|
|
| 2014 | 6 |
1.2%
|
|
| 2015 | 16 |
3.1%
|
|
| 2016 | 10 |
1.9%
|
|
| 2017 | 16 |
3.1%
|
|
| 2018 | 32 |
6.2%
|
|
| 2019 | 59 |
11.4%
|
|
| 2020 | 62 |
12%
|
|
| 2021 | 88 |
17%
|
|
| 2022 | 75 |
14.5%
|
|
| 2023 | 12 |
2.3%
|
|
| Sysmiss | 2437 |