| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.4%
|
| 0 | No time was spent | 16 |
6.2%
|
| 1 | 18 |
6.9%
|
|
| 2 | 8 |
3.1%
|
|
| 3 | 3 |
1.2%
|
|
| 4 | 3 |
1.2%
|
|
| 5 | 52 |
20.1%
|
|
| 8 | 3 |
1.2%
|
|
| 10 | 66 |
25.5%
|
|
| 11 | 1 |
0.4%
|
|
| 12 | 1 |
0.4%
|
|
| 15 | 11 |
4.2%
|
|
| 18 | 2 |
0.8%
|
|
| 20 | 20 |
7.7%
|
|
| 22 | 1 |
0.4%
|
|
| 25 | 4 |
1.5%
|
|
| 30 | 11 |
4.2%
|
|
| 35 | 2 |
0.8%
|
|
| 40 | 5 |
1.9%
|
|
| 45 | 1 |
0.4%
|
|
| 50 | 12 |
4.6%
|
|
| 60 | 4 |
1.5%
|
|
| 75 | 1 |
0.4%
|
|
| 80 | 4 |
1.5%
|
|
| 90 | 2 |
0.8%
|
|
| 95 | 1 |
0.4%
|
|
| 100 | 6 |
2.3%
|