| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 9 |
0.4%
|
|
| 2015 | 337 |
15.2%
|
|
| 2016 | 469 |
21.2%
|
|
| 2017 | 462 |
20.8%
|
|
| 2018 | 428 |
19.3%
|
|
| 2019 | 433 |
19.5%
|
|
| 2020 | 79 |
3.6%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 53703 |