| Value | Category | Cases | |
|---|---|---|---|
| 1 | 15 |
1.8%
|
|
| 2 | 10 |
1.2%
|
|
| 3 | 4 |
0.5%
|
|
| 5 | 1 |
0.1%
|
|
| 20 | 4 |
0.5%
|
|
| Missing value | 798 |
95.9%
|