| Value | Category | Cases | |
|---|---|---|---|
| 1 | 20 | 17 |
0.9%
|
| 2 | 30 | 7 |
0.4%
|
| 3 | 40 | 21 |
1.2%
|
| 4 | 50 | 5 |
0.3%
|
| 5 | 60 | 1 |
0.1%
|
| Missing value | 1744 |
97.2%
|