Membership statistics
| Types of membership Jan 1st, 2016 | |
| Total 14 921 members | 100 % |
| Employees | 52,6 % |
| Retired pensioners | 25,5 % |
| Freelancers / entrepreneurs | 9,4 % |
| Students | 4,9% |
| Unemployed | 7,6 % |
Membership growth and gender balance trends
| Year | Total | Men | Women | Women % |
| 1925 | 369 | 361 | 8 | 2.2 % |
| 1937 | 459 | 429 | 30 | 6.5 % |
| 1958 | 855 | 688 | 167 | 19.5 % |
| 1968 | 1616 | 1213 | 403 | 24.9 % |
| 1971 | 2687 | 1739 | 949 | 35.3 % |
| 1980 | 5859 | 3345 | 2514 | 42.9 % |
| 1985 | 7022 | 3854 | 3168 | 45.1 % |
| 1990 | 8570 | 4411 | 4159 | 48.5 % |
| 1995 | 9261 | 4633 | 4628 | 50.0 % |
| 2000 | 12345 | 5798 | 6547 | 53.0 % |
| 2005 | 14371 | 6403 | 7968 | 55.4 % |
| 2010 | 15671 | 6747 | 8924 | 56.9 % |
| 2015 | 14921 | 6357 | 8563 | 57,4 % |