| Value | Category | Cases | |
|---|---|---|---|
| 1 | Throughout the entire year | 46 |
21.5%
|
| 2 | In the last month of the year | 47 |
22%
|
| 3 | In the last three months of the year | 39 |
18.2%
|
| 4 | Last two months of the year | 38 |
17.8%
|
| 5 | Intermittently | 23 |
10.7%
|
| 6 | During summer break | 15 |
7%
|
| 98 | Don't know | 6 |
2.8%
|
| Sysmiss | 25228 |