| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 21 |
2.4%
|
| 2 | 2 | 103 |
11.8%
|
| 3 | 3 | 172 |
19.8%
|
| 4 | 4 | 196 |
22.5%
|
| 5 | 5 | 155 |
17.8%
|
| 6 | 6 | 103 |
11.8%
|
| 7 | 7 | 63 |
7.2%
|
| 8 | 8 | 29 |
3.3%
|
| 9 | 9 | 16 |
1.8%
|
| Missing value | 12 |
1.4%
|