| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 33 |
2.4%
|
| 1 | January | 102 |
7.5%
|
| 2 | February | 72 |
5.3%
|
| 3 | March | 75 |
5.6%
|
| 4 | April | 63 |
4.7%
|
| 5 | May | 70 |
5.2%
|
| 6 | June | 64 |
4.7%
|
| 7 | July | 81 |
6%
|
| 8 | August | 74 |
5.5%
|
| 9 | September | 87 |
6.4%
|
| 10 | October | 86 |
6.4%
|
| 11 | November | 92 |
6.8%
|
| 12 | December | 85 |
6.3%
|
| 44 | Marked on card | 23 |
1.7%
|
| Sysmiss | 344 |
25.5%
|