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