| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't Know (Spontaneous) | 2 |
3.8%
|
| 1 | Standard for total energy use | 29 |
54.7%
|
| 2 | Standard for energy use relative to output | 12 |
22.6%
|
| 3 | Standard for energy use relative to other parameters | 10 |
18.9%
|
| Sysmiss | 307 |