| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 9 |
1.4%
|
| 2 | 2 | 131 |
20.5%
|
| 3 | 3 | 7 |
1.1%
|
| 4 | 4 | 2 |
0.3%
|
| Missing value | 491 |
76.7%
|