| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 78 |
30.1%
|
| 2014 | 12 |
4.6%
|
|
| 2015 | 96 |
37.1%
|
|
| 2016 | 70 |
27%
|
|
| 4444 | Marked on card | 2 |
0.8%
|
| 9998 | DK | 1 |
0.4%
|