Level of studies completed by the main breadwinner;Average size of household;Total Total;Households;14,865,707 Total;Persons;43,106,664 Total;Average size of the household;2.90 Without studies and illiterates;Households;1,734,693 Without studies and illiterates;Persons;4,088,548 Without studies and illiterates;Average size of the household;2.36 Primary education;Households;4,778,041 Primary education;Persons;13,132,145 Primary education;Average size of the household;2.75 Secondary education, first cycle;Households;3,020,329 Secondary education, first cycle;Persons;9,696,055 Secondary education, first cycle;Average size of the household;3.21 Secondary education, second cycle;Households;2,332,737 Secondary education, second cycle;Persons;7,173,612 Secondary education, second cycle;Average size of the household;3.08 Higher non-university studies;Households;711,082 Higher non-university studies;Persons;2,148,061 Higher non-university studies;Average size of the household;3.02 University studies, first cycle;Households;900,296 University studies, first cycle;Persons;2,605,673 University studies, first cycle;Average size of the household;2.89 University studies, 2nd and 3rd cycle;Households;1,341,879 University studies, 2nd and 3rd cycle;Persons;4,118,209 University studies, 2nd and 3rd cycle;Average size of the household;3.07