| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't Know (Spontaneous) | 1 |
3.4%
|
| 1 | Standard for total energy use | 21 |
72.4%
|
| 2 | Standard for energy use relative to output | 6 |
20.7%
|
| 3 | Standard for energy use relative to other parameters | 1 |
3.4%
|
| Sysmiss | 329 |