| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 23 |
2.1%
|
| 1965 | 1 |
0.1%
|
|
| 1973 | 1 |
0.1%
|
|
| 1990 | 2 |
0.2%
|
|
| 1995 | 1 |
0.1%
|
|
| 1998 | 2 |
0.2%
|
|
| 1999 | 2 |
0.2%
|
|
| 2000 | 8 |
0.7%
|
|
| 2001 | 5 |
0.5%
|
|
| 2002 | 3 |
0.3%
|
|
| 2003 | 2 |
0.2%
|
|
| 2004 | 2 |
0.2%
|
|
| 2005 | 14 |
1.3%
|
|
| 2006 | 3 |
0.3%
|
|
| 2007 | 2 |
0.2%
|
|
| 2008 | 12 |
1.1%
|
|
| 2009 | 15 |
1.4%
|
|
| 2010 | 25 |
2.3%
|
|
| 2011 | 3 |
0.3%
|
|
| 2012 | 15 |
1.4%
|
|
| 2013 | 12 |
1.1%
|
|
| 2014 | 19 |
1.7%
|
|
| 2015 | 66 |
6%
|
|
| 2016 | 54 |
4.9%
|
|
| 2017 | 70 |
6.4%
|
|
| 2018 | 126 |
11.5%
|
|
| 2019 | 89 |
8.1%
|
|
| 2020 | 141 |
12.9%
|
|
| 2021 | 375 |
34.3%
|
|
| Sysmiss | 8283 |