| Value | Category | Cases | |
|---|---|---|---|
| 1 | 4 |
2%
|
|
| 2 | 5 |
2.5%
|
|
| 3 | 3 |
1.5%
|
|
| 4 | 3 |
1.5%
|
|
| 7 | 1 |
0.5%
|
|
| 10 | 1 |
0.5%
|
|
| 15 | 1 |
0.5%
|
|
| 28 | 1 |
0.5%
|
|
| Missing value | 180 |
90.5%
|