Encuesta de Fecundidad Preferences and motivations in terms of size of the family. Females, between 15-49 years. Females between 15 and 49 years actual age (years) treatment to obtain pregnancy. Unidades: relative figures ;Total;Has not been treatment;Has been treatment. Total;Has been treatment and at last one live birth;Has been treatment and no live child; Total;100;97,64;2,36;1,16;1,2; From 15 to 29 years old;100;99,59;0,41;0,12;0,29; From 30 to 34 years old;100;96,59;3,41;1,77;1,64; From 35 to 39 years old;100;95,16;4,84;2,12;2,72; From 40 to 44 years old;100;96,18;3,82;2,28;1,54; From 45 to 49 years old;100;96,44;3,56;1,78;1,78; Notas: Fuente: National Statistics Institute