It originally had 2,498, a total which fluctuated over the next 15 years.

In 1932, it affiliated to the Swedish Trade Union Confederation, and membership grew steadily, reaching a peak of 59,681 in 1999.

Since then, it fell rapidly, and in 2019 membership stood at 26,562.

This article related to a European trade union is a stub.

You can help Wikipedia by expanding it.This article about an organization based in Sweden is a stub.