Members between the ages of 15 and 29 were most likely to quit the funds, which are usually operated by trade unions and were traditionally linked to union membership, reports TT.
The survey shows that there is a relationship between household income and the decision to leave the union. Those living on less then 250,000 kronor a year are more prone to leave. The results are in accordance to what researchers have often suspected, and they say that there is a risk that the figure will rise to more than one in ten in the future.
Unions and unemployment benefit funds have already felt this trend, with membership rates falling.