| Value |
Category |
| 1 |
Under 2 years |
| 2 |
3-5 years |
| 3 |
6-10 years |
| 4 |
11-15 years |
| 5 |
16-20 years |
| 6 |
more then 20 years |
| 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.