| Value |
Category |
| 0 |
Not given |
| 2012 |
|
| 2013 |
|
| 2014 |
|
| 4444 |
Marked on card |
| 9997 |
Inconsistent |
| 9998 |
DK |
| 9999 |
Missing |
| 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.