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: absolute figures

;Total;From 15 to 29 years old;From 30 to 39 years old;From 40 to 49 years old;
Failure of contraception used;174.190;8.661;54.526;111.003;
Lack of knowledge of contraceptions;56.406;697;3.021;52.687;
Others;67.690;6.591;20.701;40.398;
Notas:
Fuente: National Statistics Institute