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. Unidades: relative figures ,Total,None,One,Two,Three,Four,Five and more, Total,100,84,24,4,56,7,56,2,68,0,49,0,47, Up to 10,000 inhabitants,100,79,7,5,15,9,82,5,06,0,27,.., From 10,001 to 50,000 inhabitants,100,83,09,5,45,8,58,2,03,0,29,0,57, From 50,001 to 500,000 inhabitants,100,86,3,88,6,3,2,59,0,58,0,65, More than 500,000 inhabitants,100,87,54,4,21,6,21,0,69,0,81,0,54, Notas: Fuente: National Statistics Institute