| Value | Category | Cases | |
|---|---|---|---|
| 0 | 636 |
20%
|
|
| 1 | 937 |
29.5%
|
|
| 2 | 158 |
5%
|
|
| 3 | 52 |
1.6%
|
|
| 4 | 15 |
0.5%
|
|
| 5 | 4 |
0.1%
|
|
| 7 | 1 |
0%
|
|
| Missing value | 1377 |
43.3%
|