| Value | Category | Cases | |
|---|---|---|---|
| 1 | Annually | 38 |
10.6%
|
| 2 | Bi-annually | 4 |
1.1%
|
| 3 | Fortnightly | 3 |
0.8%
|
| 4 | Monthly | 9 |
2.5%
|
| 5 | Quarterly | 6 |
1.7%
|
| 6 | Weekly | 1 |
0.3%
|
| Missing value | 299 |
83.1%
|