| Value | Category | Cases | |
|---|---|---|---|
| 0 | 672 |
16.5%
|
|
| 1 | 13 |
0.3%
|
|
| 2 | 21 |
0.5%
|
|
| 3 | 12 |
0.3%
|
|
| 4 | 6 |
0.1%
|
|
| 5 | 3 |
0.1%
|
|
| 6 | 2 |
0%
|
|
| 9 | 4 |
0.1%
|
|
| 20 | 1 |
0%
|
|
| Missing value | 3335 |
82%
|