| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 4 |
0.3%
|
| 2 | 2 | 38 |
3.3%
|
| 3 | 3 | 113 |
9.8%
|
| 4 | 4 | 226 |
19.7%
|
| 5 | 5 | 281 |
24.5%
|
| 6 | 6 | 211 |
18.4%
|
| 7 | 7 | 113 |
9.8%
|
| 8 | 8 | 79 |
6.9%
|
| 9 | 9 | 33 |
2.9%
|
| 10 | 10 | 22 |
1.9%
|
| 11 | 11 | 10 |
0.9%
|
| 12 | 12 | 18 |
1.6%
|
| Missing value | 1 |
0.1%
|