It's the price of housing, not one's income, that determines whether people are sleeping on the streets. (Assuming that they actually are in Greece.) Plus, GD

It's the price of housing, not one's income, that determines whether people are sleeping on the streets. (Assuming that they actually are in Greece.) Plus, GDP/no_of_people is an average. Some make more, some make a lot less. Especially those 25% unemployed.