| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 143 |
19.5%
|
| 2 | 2 | 21 |
2.9%
|
| 3 | 3 | 1 |
0.1%
|
| 4 | 4 | 1 |
0.1%
|
| 5 | 5 | 1 |
0.1%
|
| 6 | 8 | 1 |
0.1%
|
| Missing value | 567 |
77.1%
|