| Value |
Category |
| 1 |
no regist. req. |
| 2 |
offic. regis. |
| 3 |
official license |
| 4 |
none present |
| 5 |
D.K. |
| 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.