| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 313 |
28.6%
|
| 0 | No time was spent | 355 |
32.4%
|
| 1 | 19 |
1.7%
|
|
| 2 | 29 |
2.6%
|
|
| 3 | 28 |
2.6%
|
|
| 4 | 12 |
1.1%
|
|
| 5 | 16 |
1.5%
|
|
| 6 | 5 |
0.5%
|
|
| 7 | 1 |
0.1%
|
|
| 8 | 3 |
0.3%
|
|
| 9 | 1 |
0.1%
|
|
| 10 | 45 |
4.1%
|
|
| 12 | 1 |
0.1%
|
|
| 14 | 1 |
0.1%
|
|
| 15 | 14 |
1.3%
|
|
| 17 | 1 |
0.1%
|
|
| 20 | 65 |
5.9%
|
|
| 21 | 1 |
0.1%
|
|
| 22 | 1 |
0.1%
|
|
| 25 | 18 |
1.6%
|
|
| 30 | 34 |
3.1%
|
|
| 34 | 1 |
0.1%
|
|
| 35 | 2 |
0.2%
|
|
| 40 | 29 |
2.6%
|
|
| 44 | 1 |
0.1%
|
|
| 45 | 3 |
0.3%
|
|
| 50 | 35 |
3.2%
|
|
| 55 | 2 |
0.2%
|
|
| 60 | 21 |
1.9%
|
|
| 65 | 3 |
0.3%
|
|
| 67 | 1 |
0.1%
|
|
| 70 | 5 |
0.5%
|
|
| 80 | 12 |
1.1%
|
|
| 90 | 4 |
0.4%
|
|
| 100 | 14 |
1.3%
|