It found that state spending on health care, schools and care of the elderly has gone up by 68 percent since 1980, and that is taking into account the effects of inflation, it claims.
During the same period the number of people living in Sweden has risen by 14.5 percent, news agency TT reports.
"It's an enormous increase in resources", SKL chief economist told TT.
However, Jesper Hansson from the National Institute for Economic Research adds that wages have also gone up during the same period. "We don't have more people working in the public sector" he says.