| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not given | 5852 |
76.3%
|
| 1 | January | 55 |
0.7%
|
| 2 | February | 41 |
0.5%
|
| 3 | March | 52 |
0.7%
|
| 4 | April | 56 |
0.7%
|
| 5 | May | 76 |
1%
|
| 6 | June | 78 |
1%
|
| 7 | July | 70 |
0.9%
|
| 8 | August | 72 |
0.9%
|
| 9 | September | 93 |
1.2%
|
| 10 | October | 86 |
1.1%
|
| 11 | November | 77 |
1%
|
| 12 | December | 57 |
0.7%
|
| 44 | Marked on card | 16 |
0.2%
|
| Sysmiss | 993 |
12.9%
|