| Value | Category | Cases | |
|---|---|---|---|
| 1 | January | 5 |
8.3%
|
| 2 | February | 1 |
1.7%
|
| 3 | March | 2 |
3.3%
|
| 4 | April | 17 |
28.3%
|
| 5 | May | 2 |
3.3%
|
| 6 | June | 4 |
6.7%
|
| 7 | July | 1 |
1.7%
|
| 8 | August | 1 |
1.7%
|
| 9 | September | 1 |
1.7%
|
| 10 | October | 4 |
6.7%
|
| 11 | November | 3 |
5%
|
| 12 | December | 2 |
3.3%
|
| 13 | During the year | 11 |
18.3%
|
| 14 | Never sold | 6 |
10%
|
| Sysmiss | Do not know | 0 | |
| Sysmiss | 5 |