| Value |
Category |
| 23 |
Wood plunks |
| 31 |
Metal |
| 33 |
Concrete, cement fibre |
| 41 |
Single |
| 42 |
Double |
| 96 |
Other |
| 99 |
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.