| Value |
Category |
| 0 |
|
| 1 |
Bio-gas |
| 2 |
Solar energy |
| 3 |
Wind energy |
| 4 |
Any combination of codes 1 to 3 |
| 5 |
None |
| 9 |
Others |
| 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.