| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 0 |
0%
|
| 2 | 1 | 180 |
7.4%
|
| 3 | 2 | 155 |
6.4%
|
| 4 | 3 | 239 |
9.8%
|
| 5 | 4 | 299 |
12.3%
|
| 6 | 5 | 339 |
13.9%
|
| 7 | 6 | 289 |
11.9%
|
| 8 | 7 | 277 |
11.4%
|
| 9 | 8 | 249 |
10.2%
|
| 10 | 9 | 158 |
6.5%
|
| 11 | 10 | 102 |
4.2%
|
| 12 | 11+ | 145 |
6%
|
| Missing value | 6 |