| Value | Category | Cases | |
|---|---|---|---|
| 1 | Does not operate yet | 2 |
5.9%
|
| 2 | Operates for less then 12 months | 0 |
0%
|
| 3 | Operates from 1 to 2 years | 2 |
5.9%
|
| 4 | Operates for more then 2 years | 30 |
88.2%
|
| Sysmiss | 255 |