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