| More than 10 times a year | 7 % |
| Between 5-10 times a year | 21 % |
| Fewer than 5 times a year | 47 % |
| I do what the PD requires | 25 % |
| Total | 1504 |
| More than 10 times a year | 7 % |
| Between 5-10 times a year | 21 % |
| Fewer than 5 times a year | 47 % |
| I do what the PD requires | 25 % |
| Total | 1504 |