| Value |
Category |
| 1 |
central heating |
| 2 |
gas |
| 3 |
kerosene |
| 4 |
electricity |
| 5 |
solar |
| 6 |
coal /wood |
| 97 |
other (specify) |
| 98 |
not available |
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.