| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2 | 30 |
2.1%
|
| 2 | 3 | 1081 |
73.9%
|
| 3 | 4 | 80 |
5.5%
|
| 4 | 5 | 20 |
1.4%
|
| 5 | 6 | 70 |
4.8%
|
| 6 | 8 | 6 |
0.4%
|
| 7 | 9 | 9 |
0.6%
|
| 8 | 12 | 4 |
0.3%
|
| 9 | 15 | 2 |
0.1%
|
| Missing value | 160 |
10.9%
|