| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
3%
|
| 0 | No time was spent | 153 |
42.1%
|
| 1 | 18 |
5%
|
|
| 2 | 7 |
1.9%
|
|
| 3 | 6 |
1.7%
|
|
| 4 | 3 |
0.8%
|
|
| 5 | 19 |
5.2%
|
|
| 7 | 1 |
0.3%
|
|
| 8 | 3 |
0.8%
|
|
| 10 | 32 |
8.8%
|
|
| 13 | 1 |
0.3%
|
|
| 14 | 1 |
0.3%
|
|
| 15 | 3 |
0.8%
|
|
| 20 | 21 |
5.8%
|
|
| 24 | 1 |
0.3%
|
|
| 30 | 15 |
4.1%
|
|
| 40 | 9 |
2.5%
|
|
| 50 | 11 |
3%
|
|
| 60 | 3 |
0.8%
|
|
| 70 | 5 |
1.4%
|
|
| 80 | 6 |
1.7%
|
|
| 90 | 2 |
0.6%
|
|
| 95 | 1 |
0.3%
|
|
| 100 | 31 |
8.5%
|