| Value | Category | Cases | |
|---|---|---|---|
| 1 | Annually | 111 |
30.8%
|
| 2 | Bi-annually | 15 |
4.2%
|
| 3 | Fortnightly | 3 |
0.8%
|
| 4 | Monthly | 13 |
3.6%
|
| 5 | Quarterly | 12 |
3.3%
|
| 6 | Weekly | 2 |
0.6%
|
| Missing value | 204 |
56.7%
|