| Value | Category | Cases | |
|---|---|---|---|
| 10 | 563 |
17.3%
|
|
| 20 | 142 |
4.4%
|
|
| 30 | 950 |
29.2%
|
|
| 9999 | 1576 |
48.4%
|
|
| Missing value | 23 |
0.7%
|