| Value | Category | Cases | |
|---|---|---|---|
| 1 | 5 | 1 |
0.3%
|
| 2 | 6 | 2 |
0.6%
|
| 3 | 7 | 2 |
0.6%
|
| 4 | 9 | 1 |
0.3%
|
| Missing value | 344 |
98.3%
|