| Value | Category | Cases | |
|---|---|---|---|
| 0 | 630 |
72.1%
|
|
| 1 | 48 |
5.5%
|
|
| 2 | 17 |
1.9%
|
|
| 3 | 5 |
0.6%
|
|
| 4 | 1 |
0.1%
|
|
| 6 | 1 |
0.1%
|
|
| Missing value | 172 |
19.7%
|