| Value | Category | Cases | |
|---|---|---|---|
| 0 | Less than one full month | 66 |
18.5%
|
| 1 | 39 |
11%
|
|
| 2 | 50 |
14%
|
|
| 3 | 57 |
16%
|
|
| 4 | 21 |
5.9%
|
|
| 5 | 16 |
4.5%
|
|
| 6 | 30 |
8.4%
|
|
| 7 | 8 |
2.2%
|
|
| 8 | 13 |
3.7%
|
|
| 9 | 1 |
0.3%
|
|
| 10 | 10 |
2.8%
|
|
| 11 | 3 |
0.8%
|
|
| 12 | 42 |
11.8%
|
|
| Sysmiss | 6732 |