| Value | Category | Cases | |
|---|---|---|---|
| 20 | 15 |
3.2%
|
|
| 50 | 9 |
1.9%
|
|
| 80 | 6 |
1.3%
|
|
| 100 | 15 |
3.2%
|
|
| Missing value | 418 |
90.3%
|