| Value |
Category |
| -9 |
Don't know (sponetaneous) |
| 1 |
Increased |
| 2 |
Remained the same |
| 3 |
Decreased |
| 4 |
|
| 5 |
|
| 6 |
|
| 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.
