Value |
Category |
1 |
Earth |
2 |
Rammed earth |
3 |
Cement screed |
4 |
Concrete |
5 |
Tiles |
6 |
Brick |
7 |
Stone |
8 |
Wood |
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.