| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
1.5%
|
| 0 | No time was spent | 66 |
16.4%
|
| 1 | 35 |
8.7%
|
|
| 2 | 20 |
5%
|
|
| 3 | 8 |
2%
|
|
| 4 | 6 |
1.5%
|
|
| 5 | 75 |
18.7%
|
|
| 7 | 1 |
0.2%
|
|
| 8 | 4 |
1%
|
|
| 10 | 75 |
18.7%
|
|
| 11 | 1 |
0.2%
|
|
| 12 | 2 |
0.5%
|
|
| 15 | 12 |
3%
|
|
| 16 | 1 |
0.2%
|
|
| 20 | 51 |
12.7%
|
|
| 25 | 5 |
1.2%
|
|
| 30 | 9 |
2.2%
|
|
| 35 | 2 |
0.5%
|
|
| 40 | 4 |
1%
|
|
| 50 | 9 |
2.2%
|
|
| 60 | 4 |
1%
|
|
| 70 | 3 |
0.7%
|
|
| 100 | 3 |
0.7%
|