| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 55 |
5.8%
|
| 0 | No time was spent | 125 |
13.1%
|
| 1 | 79 |
8.3%
|
|
| 2 | 57 |
6%
|
|
| 3 | 31 |
3.2%
|
|
| 4 | 9 |
0.9%
|
|
| 5 | 156 |
16.3%
|
|
| 7 | 5 |
0.5%
|
|
| 8 | 8 |
0.8%
|
|
| 9 | 2 |
0.2%
|
|
| 10 | 199 |
20.8%
|
|
| 12 | 5 |
0.5%
|
|
| 13 | 1 |
0.1%
|
|
| 14 | 2 |
0.2%
|
|
| 15 | 35 |
3.7%
|
|
| 16 | 1 |
0.1%
|
|
| 18 | 1 |
0.1%
|
|
| 20 | 88 |
9.2%
|
|
| 22 | 1 |
0.1%
|
|
| 24 | 1 |
0.1%
|
|
| 25 | 14 |
1.5%
|
|
| 30 | 44 |
4.6%
|
|
| 40 | 9 |
0.9%
|
|
| 50 | 14 |
1.5%
|
|
| 55 | 1 |
0.1%
|
|
| 60 | 6 |
0.6%
|
|
| 70 | 2 |
0.2%
|
|
| 80 | 1 |
0.1%
|
|
| 100 | 3 |
0.3%
|