| Value |
Category |
| 1 |
during the past 12 months |
| 2 |
1-2 years ago |
| 3 |
2-3 years ago |
| 4 |
3 or more years ago |
| 8 |
do not know |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
