| Value | Category | Cases | |
|---|---|---|---|
| 1 | Use only | 54 |
44.3%
|
| 2 | Production only | 30 |
24.6%
|
| 3 | Both use and produce | 35 |
28.7%
|
| 98 | Don't know | 3 |
2.5%
|
| Sysmiss | 70514 |