| Value | Category | Cases | |
|---|---|---|---|
| 1 | Elementary proficiency | 55 |
1.1%
|
| 2 | Limited working proficiency | 202 |
4.1%
|
| 3 | Professional working proficiency | 651 |
13.2%
|
| 4 | Full professional proficiency | 1786 |
36.3%
|
| 5 | Native proficiency | 258 |
5.2%
|
| 6 | Other | 9 |
0.2%
|
| 7 | Not Specified | 1954 |
39.8%
|
| Sysmiss | 1748 |