| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes | 1712 |
12.2%
|
| 2 | Between 15 and 30 minutes | 3221 |
23%
|
| 3 | Between 31 and 60 minutes | 3937 |
28.1%
|
| 4 | More than 60 minutes | 4454 |
31.8%
|
| 99 | Don?t know | 670 |
4.8%
|