| Value | Category | Cases | |
|---|---|---|---|
| 0 | 8 |
0.6%
|
|
| 1 | 19 |
1.5%
|
|
| 2 | 6 |
0.5%
|
|
| 3 | 2 |
0.2%
|
|
| 4 | 1 |
0.1%
|
|
| 5 | 2 |
0.2%
|
|
| 6 | 1 |
0.1%
|
|
| 9 | 1 |
0.1%
|
|
| 12 | 1 |
0.1%
|
|
| 15 | 1 |
0.1%
|
|
| Missing value | 1257 |
96.8%
|