| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 105 |
29.8%
|
| 0 | No time was spent | 69 |
19.6%
|
| 1 | 6 |
1.7%
|
|
| 2 | 15 |
4.3%
|
|
| 3 | 6 |
1.7%
|
|
| 4 | 1 |
0.3%
|
|
| 5 | 25 |
7.1%
|
|
| 10 | 28 |
8%
|
|
| 12 | 3 |
0.9%
|
|
| 13 | 2 |
0.6%
|
|
| 15 | 19 |
5.4%
|
|
| 20 | 26 |
7.4%
|
|
| 25 | 10 |
2.8%
|
|
| 30 | 9 |
2.6%
|
|
| 35 | 2 |
0.6%
|
|
| 40 | 5 |
1.4%
|
|
| 48 | 1 |
0.3%
|
|
| 50 | 12 |
3.4%
|
|
| 60 | 2 |
0.6%
|
|
| 70 | 2 |
0.6%
|
|
| 80 | 1 |
0.3%
|
|
| 90 | 1 |
0.3%
|
|
| 100 | 2 |
0.6%
|