|
| Frequency | Percent | Valid Percent | Cumulative Percent | |
| Valid | monthly | 17 | 8.1 | 9.6 | 9.6 |
| six months | 42 | 20.1 | 23.7 | 33.3 | |
| Every year | 45 | 21.5 | 25.4 | 58.8 | |
| I don’t know | 73 | 34.9 | 41.2 | 100.0 | |
| Total | 177 | 84.7 | 100.0 |
| |
| Missing | 13 | 32 | 15.3 |
|
|
| Total | 209 | 100.0 |
|
| |