| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 15 |
0.4%
|
|
| 2015 | 654 |
16%
|
|
| 2016 | 815 |
19.9%
|
|
| 2017 | 848 |
20.7%
|
|
| 2018 | 827 |
20.2%
|
|
| 2019 | 802 |
19.6%
|
|
| 2020 | 126 |
3.1%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 51833 |