Concerned Neighbors of Greater Grmntwn

We have had the same $5.00 membership dues for several years. We have been thinking that it might be time to increase the dues to either $7.00 or $10.00 per family. We are holding events every month, and this depletes the treasury account rather quickly. Other area neighborhoods are charging $15.00 - $20.00 per family and the residents only have 4 or 5 events per year. What do you think about the increase?