| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
2.8%
|
| 0 | No time was spent | 137 |
38.7%
|
| 1 | 23 |
6.5%
|
|
| 2 | 11 |
3.1%
|
|
| 3 | 5 |
1.4%
|
|
| 4 | 2 |
0.6%
|
|
| 5 | 30 |
8.5%
|
|
| 6 | 1 |
0.3%
|
|
| 7 | 2 |
0.6%
|
|
| 8 | 1 |
0.3%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 42 |
11.9%
|
|
| 12 | 6 |
1.7%
|
|
| 15 | 7 |
2%
|
|
| 20 | 28 |
7.9%
|
|
| 23 | 1 |
0.3%
|
|
| 24 | 1 |
0.3%
|
|
| 25 | 2 |
0.6%
|
|
| 30 | 26 |
7.3%
|
|
| 36 | 1 |
0.3%
|
|
| 40 | 3 |
0.8%
|
|
| 45 | 1 |
0.3%
|
|
| 50 | 7 |
2%
|
|
| 60 | 3 |
0.8%
|
|
| 70 | 1 |
0.3%
|
|
| 80 | 2 |
0.6%
|