Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, have not used or use contracep. size of municipality of residence number of live births. Units: absolute figures Total None One Two Three Four Five and more Average Total 2,789,179 2,349,707 127,298 210,917 74,671 13,615 12,971 0.32 Up to 10,000 inhabitants 620,676 494,691 31,958 60,927 31,415 1,685 .. 0.41 From 10,001 to 50,000 inhabitants 605,379 503,018 33,003 51,916 12,276 1,743 3,422 0.33 From 50,001 to 500,000 inhabitants 1,065,336 916,217 41,363 67,154 27,559 6,168 6,875 0.30 More than 500,000 inhabitants 497,788 435,781 20,974 30,920 3,421 4,019 2,674 0.25 Notes: Source: National Statistics Institute