| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 71 |
5.3%
|
| 1 | January | 91 |
6.7%
|
| 2 | February | 91 |
6.7%
|
| 3 | March | 80 |
5.9%
|
| 4 | April | 74 |
5.5%
|
| 5 | May | 77 |
5.7%
|
| 6 | June | 60 |
4.4%
|
| 7 | July | 67 |
5%
|
| 8 | August | 60 |
4.4%
|
| 9 | September | 77 |
5.7%
|
| 10 | October | 72 |
5.3%
|
| 11 | November | 93 |
6.9%
|
| 12 | December | 74 |
5.5%
|
| 44 | Marked on card | 20 |
1.5%
|
| Sysmiss | 344 |
25.5%
|