Encuesta de Fecundidad
Knowledge and use of contraceptions. Fem. between 15-49
Females between 15 and 49 years,   non knowledge of contraceptions  age actual (years)  number of live births. 
Unidades: relative figures

,Total,None,One,Two,Three,Four,Five and more,
Total,100,60,56,9,32,18,99,8,64,1,32,1,16,
From 15 to 19 years old,100,100,..,..,..,..,..,
From 20 to 24 years old,100,100,..,..,..,..,..,
From 25 to 29 years old,100,95,2,4,8,..,..,..,..,
From 30 to 34 years old,100,51,23,48,77,..,..,..,..,
From 35 to 39 years old,100,22,98,15,23,33,5,19,65,8,64,..,
From 40 to 44 years old,100,33,93,25,06,27,89,13,11,..,..,
45 to 49 years,100,19,98,4,4,50,4,18,95,..,6,26,
Notas:
Fuente: National Statistics Institute