| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
2%
|
| -7 | Never regiestered (spontaneous) | 0 |
0%
|
| 1961 | 1 |
0.7%
|
|
| 1996 | 2 |
1.3%
|
|
| 1997 | 1 |
0.7%
|
|
| 1999 | 2 |
1.3%
|
|
| 2000 | 6 |
4%
|
|
| 2001 | 2 |
1.3%
|
|
| 2002 | 2 |
1.3%
|
|
| 2003 | 1 |
0.7%
|
|
| 2004 | 5 |
3.3%
|
|
| 2005 | 5 |
3.3%
|
|
| 2006 | 5 |
3.3%
|
|
| 2007 | 3 |
2%
|
|
| 2008 | 3 |
2%
|
|
| 2009 | 4 |
2.6%
|
|
| 2010 | 6 |
4%
|
|
| 2011 | 2 |
1.3%
|
|
| 2012 | 7 |
4.6%
|
|
| 2013 | 2 |
1.3%
|
|
| 2014 | 4 |
2.6%
|
|
| 2015 | 9 |
6%
|
|
| 2016 | 6 |
4%
|
|
| 2017 | 11 |
7.3%
|
|
| 2018 | 12 |
7.9%
|
|
| 2019 | 13 |
8.6%
|
|
| 2020 | 17 |
11.3%
|
|
| 2021 | 13 |
8.6%
|
|
| 2022 | 4 |
2.6%
|