| Value | Category | Cases | |
|---|---|---|---|
| 1 | 48 |
13.3%
|
|
| 2 | 17 |
4.7%
|
|
| 3 | 4 |
1.1%
|
|
| 4 | 2 |
0.6%
|
|
| 7 | 7 |
1.9%
|
|
| 20 | 1 |
0.3%
|
|
| Missing value | 281 |
78.1%
|