| Value | Category | Cases | |
|---|---|---|---|
| 0 | 306 |
82.7%
|
|
| 1 | 23 |
6.2%
|
|
| 2 | 19 |
5.1%
|
|
| 3 | 6 |
1.6%
|
|
| 4 | 2 |
0.5%
|
|
| 5 | 2 |
0.5%
|
|
| 6 | 2 |
0.5%
|
|
| 7 | 10 |
2.7%
|
|
| Missing value | 12 |