| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 1 |
0%
|
|
| 2016 | 14 |
0.1%
|
|
| 2017 | 28 |
0.1%
|
|
| 2018 | 1 |
0%
|
|
| 8888 | Not applicable | 20980 |
99%
|
| 9999 | Unspecified | 166 |
0.8%
|