| Value | Category | Cases | |
|---|---|---|---|
| 1 | yearly | 38 |
15.6%
|
| 2 | per semester | 8 |
3.3%
|
| 3 | every four months | 2 |
0.8%
|
| 4 | every three | 10 |
4.1%
|
| 5 | every two | 0 |
0%
|
| 6 | per month | 8 |
3.3%
|
| 7 | every forthnightly | 0 |
0%
|
| 8 | weekly | 4 |
1.6%
|
| 9 | daily | 11 |
4.5%
|
| 10 | per term | 142 |
58.4%
|
| 11 | other | 20 |
8.2%
|
| Sysmiss | 1360 |