| Value | Category | Cases | |
|---|---|---|---|
| 0 | 103 |
15.4%
|
|
| 1 | 9 |
1.3%
|
|
| 2 | 9 |
1.3%
|
|
| 3 | 4 |
0.6%
|
|
| 4 | 3 |
0.4%
|
|
| Missing value | 539 |
80.8%
|