| Value | Category | Cases | |
|---|---|---|---|
| 10 | 609 |
18.7%
|
|
| 20 | 64 |
2%
|
|
| 30 | 1492 |
45.9%
|
|
| 9999 | 1066 |
32.8%
|
|
| Missing value | 23 |
0.7%
|