| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
0.9%
|
| 0 | No time was spent | 170 |
29.2%
|
| 1 | 75 |
12.9%
|
|
| 2 | 68 |
11.7%
|
|
| 3 | 24 |
4.1%
|
|
| 4 | 18 |
3.1%
|
|
| 5 | 55 |
9.5%
|
|
| 6 | 9 |
1.5%
|
|
| 7 | 6 |
1%
|
|
| 8 | 6 |
1%
|
|
| 9 | 1 |
0.2%
|
|
| 10 | 27 |
4.6%
|
|
| 12 | 1 |
0.2%
|
|
| 14 | 1 |
0.2%
|
|
| 15 | 8 |
1.4%
|
|
| 20 | 42 |
7.2%
|
|
| 24 | 1 |
0.2%
|
|
| 25 | 9 |
1.5%
|
|
| 30 | 15 |
2.6%
|
|
| 35 | 1 |
0.2%
|
|
| 40 | 9 |
1.5%
|
|
| 50 | 17 |
2.9%
|
|
| 60 | 11 |
1.9%
|
|
| 70 | 3 |
0.5%
|