| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 223 |
10.8%
|
| 0 | No time was spent | 236 |
11.4%
|
| 1 | 84 |
4.1%
|
|
| 2 | 107 |
5.2%
|
|
| 3 | 64 |
3.1%
|
|
| 4 | 25 |
1.2%
|
|
| 5 | 236 |
11.4%
|
|
| 6 | 6 |
0.3%
|
|
| 7 | 19 |
0.9%
|
|
| 8 | 32 |
1.5%
|
|
| 10 | 282 |
13.6%
|
|
| 11 | 1 |
0%
|
|
| 12 | 11 |
0.5%
|
|
| 14 | 1 |
0%
|
|
| 15 | 187 |
9%
|
|
| 16 | 3 |
0.1%
|
|
| 18 | 3 |
0.1%
|
|
| 20 | 201 |
9.7%
|
|
| 22 | 2 |
0.1%
|
|
| 23 | 1 |
0%
|
|
| 24 | 3 |
0.1%
|
|
| 25 | 60 |
2.9%
|
|
| 28 | 1 |
0%
|
|
| 30 | 102 |
4.9%
|
|
| 35 | 6 |
0.3%
|
|
| 36 | 6 |
0.3%
|
|
| 40 | 34 |
1.6%
|
|
| 48 | 1 |
0%
|
|
| 50 | 51 |
2.5%
|
|
| 60 | 7 |
0.3%
|
|
| 65 | 1 |
0%
|
|
| 70 | 8 |
0.4%
|
|
| 72 | 2 |
0.1%
|
|
| 75 | 4 |
0.2%
|
|
| 80 | 7 |
0.3%
|
|
| 85 | 1 |
0%
|
|
| 90 | 7 |
0.3%
|
|
| 100 | 44 |
2.1%
|