| Value | Category | Cases | |
|---|---|---|---|
| 0 | 443 |
36.5%
|
|
| 1 | 4 |
0.3%
|
|
| 2 | 11 |
0.9%
|
|
| 3 | 12 |
1%
|
|
| 4 | 5 |
0.4%
|
|
| 5 | 2 |
0.2%
|
|
| 7 | 9 |
0.7%
|
|
| 9999 | 2 |
0.2%
|
|
| Missing value | 726 |
59.8%
|