Value |
Category |
1 |
Coal |
2 |
Wood |
3 |
Gas (gas balloon) |
4 |
Electricity |
5 |
Central heating |
6 |
Diesel fuel |
97 |
Other |
98 |
DK |
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.