| Value | Category | Cases | |
|---|---|---|---|
| 0 | 918 |
79%
|
|
| 1 | 48 |
4.1%
|
|
| 2 | 20 |
1.7%
|
|
| 3 | 4 |
0.3%
|
|
| 8 | 1 |
0.1%
|
|
| 9999 | 18 |
1.5%
|
|
| Missing value | 153 |
13.2%
|