| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 12 |
0.1%
|
|
| 2017 | 38 |
0.2%
|
|
| 2018 | 2 |
0%
|
|
| 8888 | Not applicable | 20917 |
98.7%
|
| 9999 | Unspecified | 221 |
1%
|