| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 63 |
2.2%
|
| 2 | 1 | 2 |
0.1%
|
| 3 | 2 | 20 |
0.7%
|
| 4 | 3 | 21 |
0.7%
|
| 5 | 4 | 12 |
0.4%
|
| 6 | 5 | 11 |
0.4%
|
| 7 | 6 | 9 |
0.3%
|
| 8 | 7 | 20 |
0.7%
|
| Missing value | 2677 |
94.4%
|