| Value | Category | Cases | |
|---|---|---|---|
| 1 | 8 |
0.5%
|
|
| 2 | 9 |
0.6%
|
|
| 3 | 31 |
1.9%
|
|
| 4 | 66 |
4.1%
|
|
| 5 | 178 |
11%
|
|
| 6 | 208 |
12.9%
|
|
| 7 | 445 |
27.5%
|
|
| Missing value | 671 |
41.5%
|