| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 12 |
1.3%
|
| 2 | 1 | 143 |
15.8%
|
| 3 | 2 | 486 |
53.8%
|
| 4 | 3 | 114 |
12.6%
|
| 5 | 4 | 71 |
7.9%
|
| 6 | 5 | 37 |
4.1%
|
| 7 | 6 | 20 |
2.2%
|
| 8 | 7 | 7 |
0.8%
|
| 9 | 8 | 2 |
0.2%
|
| Missing value | 11 |
1.2%
|