| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
0.5%
|
|
| 1 | traditional | 1163 |
41.7%
|
| 2 | modern | 1445 |
51.8%
|
| 3 | up-to-date | 168 |
6%
|
| Sysmiss | 159 |