| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 457 |
33.8%
|
| 1 | January | 54 |
4%
|
| 2 | February | 35 |
2.6%
|
| 3 | March | 40 |
3%
|
| 4 | April | 55 |
4.1%
|
| 5 | May | 53 |
3.9%
|
| 6 | June | 46 |
3.4%
|
| 7 | July | 52 |
3.8%
|
| 8 | August | 51 |
3.8%
|
| 9 | September | 39 |
2.9%
|
| 10 | October | 40 |
3%
|
| 11 | November | 45 |
3.3%
|
| 12 | December | 34 |
2.5%
|
| 44 | Marked on card | 6 |
0.4%
|
| Sysmiss | 344 |
25.5%
|