| Value | Category | Cases | |
|---|---|---|---|
| 0 | 20 |
1.2%
|
|
| 1 | 169 |
9.8%
|
|
| 2 | 15 |
0.9%
|
|
| 3 | 1 |
0.1%
|
|
| Missing value | 1518 |
88.1%
|