| Value | Category | Cases | |
|---|---|---|---|
| 1 | Use only | 45 |
46.9%
|
| 2 | Production only | 10 |
10.4%
|
| 3 | Both use and produce | 35 |
36.5%
|
| 98 | Don't know | 6 |
6.3%
|
| Sysmiss | 41916 |