| Weekly | 31 % |
| Bi-Monthly | 36 % |
| Quarterly | 16 % |
| Only at qualification | 13 % |
| You mean I have to clean it? | 4 % |
| Total | 508 |
| Weekly | 31 % |
| Bi-Monthly | 36 % |
| Quarterly | 16 % |
| Only at qualification | 13 % |
| You mean I have to clean it? | 4 % |
| Total | 508 |