This map shows the average age at which children leave their parent's house in each country in Europe. Obviously, some of these are going to be high because of different cultural norms. For example, in some countries, it's perfectly normal and fine to live with your parents until you get married. However, some of these are also probably due to lower wages and poorer economic circumstances. Some of the lower age numbers are a bit perplexing, though.
The average age of most people leaving their parent's house in Sweden is extremely low, which might be due to people leaving and living elsewhere for school or for work.