| At least five times per year | 28 % |
| Three or four times per year | 15 % |
| One or two times per year | 31 % |
| Never | 26 % |
| Total | 54 |
| At least five times per year | 28 % |
| Three or four times per year | 15 % |
| One or two times per year | 31 % |
| Never | 26 % |
| Total | 54 |