| Value |
Category |
| 1 |
Until two years |
| 2 |
3 - 5 years |
| 3 |
6 - 10 years |
| 4 |
11 - 15 years |
| 5 |
16 - 20 years |
| 6 |
More than 20 years |
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.