| Value | Category | Cases | |
|---|---|---|---|
| 1 | 10 |
1.5%
|
|
| 2 | 5 |
0.7%
|
|
| 4 | 1 |
0.1%
|
|
| 6 | 1 |
0.1%
|
|
| 12 | 1 |
0.1%
|
|
| Missing value | 663 |
97.4%
|