| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Weekly (four or more times in a month) | 2155 |
1.4%
|
| 2 | 2. One to three times in a month | 5026 |
3.2%
|
| 3 | 3. Every two or three months (4 to 6 times in a year) | 6086 |
3.9%
|
| 4 | 4. One to three times in a year | 21709 |
13.8%
|
| 8 | 8. Not applicable | 118216 |
75.2%
|
| 9 | 9. Unspecified | 4081 |
2.6%
|