Nationality of the reference person Burden of housing costs (mortgage or rent, heating, electricity, etc.) Total Total A heavy burden 36,2 Total A reasonable burden 58 Total No burden 5,6 Total Not specified 0,3 Spanish A heavy burden 35,8 Spanish A reasonable burden 58,5 Spanish No burden 5,5 Spanish Not specified 0,3 Foreign (European Union) A heavy burden 35,9 Foreign (European Union) A reasonable burden 56,2 Foreign (European Union) No burden 7,6 Foreign (European Union) Not specified 0,2 Foreign (rest of the world) A heavy burden 42,8 Foreign (rest of the world) A reasonable burden 50,3 Foreign (rest of the world) No burden 6,6 Foreign (rest of the world) Not specified 0,4 Not specified A heavy burden 51,5 Not specified A reasonable burden 48,5 Not specified No burden .. Not specified Not specified ..