| Value | Category | Cases | |
|---|---|---|---|
| 1 | yearly | 130 |
25.7%
|
| 2 | per semester | 17 |
3.4%
|
| 3 | every four months | 5 |
1%
|
| 4 | every three | 17 |
3.4%
|
| 5 | every two | 1 |
0.2%
|
| 6 | per month | 10 |
2%
|
| 7 | every forthnightly | 0 |
0%
|
| 8 | weekly | 1 |
0.2%
|
| 9 | daily | 37 |
7.3%
|
| 10 | per term | 272 |
53.8%
|
| 11 | other | 16 |
3.2%
|
| Sysmiss | 1097 |