| Value |
Category |
| 10 |
NATURAL |
| 11 |
Earth |
| 20 |
RUDIMENTARY |
| 21 |
Wood |
| 30 |
FINISHED |
| 31 |
Cement |
| 32 |
Tile |
| 40 |
OTHER |
| 41 |
Other |
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.