| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 1 |
0%
|
|
| 2016 | 56 |
0.3%
|
|
| 2017 | 104 |
0.5%
|
|
| 2018 | 4 |
0%
|
|
| 8888 | Not applicable | 20857 |
98.4%
|
| 9999 | Unspecified | 168 |
0.8%
|