Not increase the social status of the population!:( (Anno 1404)

Hello! Play Anno for a bunch of years, but for the first time faced with the problem that it does not increase status of the population. All euphoria needs are met, resources to enhance a dime a dozen...Put the house of the peasants, increase the peasants only to citizens, not further increases.Writes that there is no trade privileges. What is the reason? Tell me, please!