| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Monthly | 1619 |
92.3%
|
| 2 | 2. Every two (2) months | 81 |
4.6%
|
| 3 | 3. Every three (3) months | 40 |
2.3%
|
| 4 | 4. Every six (6) months | 3 |
0.2%
|
| 5 | 5. Other | 1 |
0.1%
|
| 6 | 6. Not applicable | 11 |
0.6%
|
| Sysmiss | 6765 |