| Value | Category | Cases | |
|---|---|---|---|
| 3 | 3 |
0.6%
|
|
| 6 | 2 |
0.4%
|
|
| 9 | 1 |
0.2%
|
|
| 12 | 4 |
0.9%
|
|
| Missing value | 455 |
97.8%
|