| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 (don't know) | 36 |
3.3%
|
| -66 | -66 (refuse to answer) | 13 |
1.2%
|
| 1 | January | 92 |
8.4%
|
| 2 | February | 89 |
8.1%
|
| 3 | March | 120 |
10.9%
|
| 4 | April | 141 |
12.9%
|
| 5 | May | 147 |
13.4%
|
| 6 | June | 102 |
9.3%
|
| 7 | July | 61 |
5.6%
|
| 8 | August | 80 |
7.3%
|
| 9 | September | 50 |
4.6%
|
| 10 | October | 65 |
5.9%
|
| 11 | November | 44 |
4%
|
| 12 | December | 56 |
5.1%
|
| Sysmiss | 20 |