| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
1.6%
|
|
| 1 | 487 |
58.5%
|
|
| 2 | 49 |
5.9%
|
|
| 3 | 13 |
1.6%
|
|
| 4 | 3 |
0.4%
|
|
| 5 | 2 |
0.2%
|
|
| Missing value | 265 |
31.9%
|