| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 17 |
0.6%
|
| 2 | 2 | 395 |
13.5%
|
| 3 | 3 | 328 |
11.2%
|
| 4 | 4 | 289 |
9.9%
|
| 5 | 5 | 230 |
7.9%
|
| 6 | 6 | 151 |
5.2%
|
| 7 | 7 | 316 |
10.8%
|
| 8 | 8 | 185 |
6.3%
|
| 9 | 9+ | 139 |
4.8%
|
| Missing value | 869 |
29.8%
|