| Value | Category | Cases | |
|---|---|---|---|
| 1 | Annually | 81 |
56.6%
|
| 2 | Bi-annually | 14 |
9.8%
|
| 3 | Fortnightly | 2 |
1.4%
|
| 4 | Monthly | 15 |
10.5%
|
| 5 | Quarterly | 31 |
21.7%
|
| Missing value | 1658 |