| Value | Category | Cases | |
|---|---|---|---|
| 1 | During the past twelve months | 17735 |
82.1%
|
| 2 | More than twelve months ago | 2416 |
11.2%
|
| 3 | I have never been there | 1259 |
5.8%
|
| 9 | Unspecified | 191 |
0.9%
|