| Value | Category | Cases | |
|---|---|---|---|
| 0 | 577 |
18.9%
|
|
| 1 | 148 |
4.8%
|
|
| 2 | 78 |
2.6%
|
|
| 3 | 33 |
1.1%
|
|
| 4 | 18 |
0.6%
|
|
| 5 | 7 |
0.2%
|
|
| 6 | 4 |
0.1%
|
|
| 7 | 2 |
0.1%
|
|
| Missing value | 2191 |
71.6%
|