| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 45 |
1.7%
|
| 0 | No time was spent | 611 |
22.7%
|
| 1 | 171 |
6.3%
|
|
| 2 | 199 |
7.4%
|
|
| 3 | 148 |
5.5%
|
|
| 4 | 94 |
3.5%
|
|
| 5 | 509 |
18.9%
|
|
| 6 | 17 |
0.6%
|
|
| 7 | 37 |
1.4%
|
|
| 8 | 33 |
1.2%
|
|
| 9 | 3 |
0.1%
|
|
| 10 | 365 |
13.5%
|
|
| 11 | 1 |
0%
|
|
| 12 | 20 |
0.7%
|
|
| 13 | 3 |
0.1%
|
|
| 15 | 121 |
4.5%
|
|
| 16 | 2 |
0.1%
|
|
| 17 | 2 |
0.1%
|
|
| 18 | 3 |
0.1%
|
|
| 20 | 101 |
3.7%
|
|
| 22 | 1 |
0%
|
|
| 23 | 1 |
0%
|
|
| 24 | 5 |
0.2%
|
|
| 25 | 37 |
1.4%
|
|
| 30 | 48 |
1.8%
|
|
| 33 | 1 |
0%
|
|
| 34 | 2 |
0.1%
|
|
| 35 | 12 |
0.4%
|
|
| 40 | 19 |
0.7%
|
|
| 45 | 1 |
0%
|
|
| 48 | 3 |
0.1%
|
|
| 50 | 44 |
1.6%
|
|
| 52 | 1 |
0%
|
|
| 60 | 12 |
0.4%
|
|
| 65 | 1 |
0%
|
|
| 70 | 3 |
0.1%
|
|
| 75 | 8 |
0.3%
|
|
| 80 | 4 |
0.1%
|
|
| 90 | 2 |
0.1%
|
|
| 100 | 7 |
0.3%
|