| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 80 |
8%
|
| 0 | No time was spent | 735 |
73.6%
|
| 1 | 6 |
0.6%
|
|
| 2 | 25 |
2.5%
|
|
| 3 | 17 |
1.7%
|
|
| 4 | 9 |
0.9%
|
|
| 5 | 16 |
1.6%
|
|
| 6 | 1 |
0.1%
|
|
| 7 | 1 |
0.1%
|
|
| 10 | 14 |
1.4%
|
|
| 12 | 2 |
0.2%
|
|
| 15 | 6 |
0.6%
|
|
| 20 | 15 |
1.5%
|
|
| 25 | 3 |
0.3%
|
|
| 30 | 24 |
2.4%
|
|
| 35 | 1 |
0.1%
|
|
| 40 | 17 |
1.7%
|
|
| 50 | 15 |
1.5%
|
|
| 60 | 4 |
0.4%
|
|
| 80 | 2 |
0.2%
|
|
| 90 | 2 |
0.2%
|
|
| 95 | 1 |
0.1%
|
|
| 100 | 2 |
0.2%
|