| Value | Category | Cases | |
|---|---|---|---|
| 1 | <=5 | 7 |
7.3%
|
| 2 | 6to10 | 6 |
6.3%
|
| 3 | 11to20 | 11 |
11.5%
|
| 4 | 21to30 | 38 |
39.6%
|
| 5 | =>30 | 34 |
35.4%
|