| Value | Category | Cases | |
|---|---|---|---|
| 0 | 597 |
77.1%
|
|
| 1 | 150 |
19.4%
|
|
| 2 | 21 |
2.7%
|
|
| 3 | 4 |
0.5%
|
|
| 4 | 1 |
0.1%
|
|
| 8 | 1 |
0.1%
|
|
| Missing value | 354 |