| Value | Category | Cases | |
|---|---|---|---|
| 1 | 45 |
12.5%
|
|
| 2 | 19 |
5.3%
|
|
| 3 | 4 |
1.1%
|
|
| 4 | 3 |
0.8%
|
|
| 7 | 7 |
1.9%
|
|
| 20 | 1 |
0.3%
|
|
| Missing value | 281 |
78.1%
|