Encuesta de Fecundidad
Preferences and motivations in terms of size of the family. Females, between 15-49 years.
Females who have had more children than desired  reason why they had more children  actual age (years). 
Unidades: relative figures

;Total;From 15 to 29 years old;From 30 to 39 years old;From 40 to 49 years old;
Failure of contraception used;61,57;54,3;72,85;57,77;
Lack of knowledge of contraceptions;19,94;4,37;4,04;27,42;
Others;23,92;41,33;27,66;21,03;
Notas:
Fuente: National Statistics Institute