| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 24 |
0.1%
|
|
| 2017 | 34 |
0.2%
|
|
| 2018 | 2 |
0%
|
|
| 8888 | Not applicable | 21006 |
99.1%
|
| 9999 | Unspecified | 124 |
0.6%
|