| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 50 |
13.9%
|
| 1 | January | 44 |
12.2%
|
| 2 | February | 34 |
9.4%
|
| 3 | March | 29 |
8%
|
| 4 | April | 21 |
5.8%
|
| 5 | May | 17 |
4.7%
|
| 6 | June | 16 |
4.4%
|
| 7 | July | 19 |
5.3%
|
| 8 | August | 19 |
5.3%
|
| 9 | September | 33 |
9.1%
|
| 10 | October | 25 |
6.9%
|
| 11 | November | 27 |
7.5%
|
| 12 | December | 27 |
7.5%
|
| Sysmiss | 6800 |