| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 23 |
2.3%
|
| 0 | No time was spent | 199 |
20%
|
| 1 | 93 |
9.3%
|
|
| 2 | 108 |
10.9%
|
|
| 3 | 36 |
3.6%
|
|
| 4 | 8 |
0.8%
|
|
| 5 | 250 |
25.1%
|
|
| 6 | 4 |
0.4%
|
|
| 7 | 2 |
0.2%
|
|
| 8 | 7 |
0.7%
|
|
| 10 | 149 |
15%
|
|
| 12 | 3 |
0.3%
|
|
| 15 | 20 |
2%
|
|
| 20 | 43 |
4.3%
|
|
| 22 | 1 |
0.1%
|
|
| 25 | 16 |
1.6%
|
|
| 30 | 12 |
1.2%
|
|
| 40 | 4 |
0.4%
|
|
| 44 | 1 |
0.1%
|
|
| 50 | 8 |
0.8%
|
|
| 60 | 1 |
0.1%
|
|
| 70 | 4 |
0.4%
|
|
| 80 | 1 |
0.1%
|
|
| 85 | 1 |
0.1%
|
|
| 98 | 1 |
0.1%
|