| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 2010 | 3 |
4.2%
|
|
| 2012 | 1 |
1.4%
|
|
| 2013 | 1 |
1.4%
|
|
| 2014 | 1 |
1.4%
|
|
| 2015 | 4 |
5.6%
|
|
| 2016 | 2 |
2.8%
|
|
| 2017 | 12 |
16.9%
|
|
| 2018 | 18 |
25.4%
|
|
| 2019 | 16 |
22.5%
|
|
| 2020 | 7 |
9.9%
|
|
| 2021 | 5 |
7%
|
|
| 2022 | 1 |
1.4%
|
|
| Sysmiss | 448 |