| Value | Category | Cases | |
|---|---|---|---|
| 2 | 1 |
0.2%
|
|
| 6 | 1 |
0.2%
|
|
| 10 | 3 |
0.6%
|
|
| 15 | 1 |
0.2%
|
|
| 20 | 1 |
0.2%
|
|
| 30 | 1 |
0.2%
|
|
| Missing value | 505 |
98.4%
|