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: absolute figures

;Total;None;One;Two;Three;Four;Five and more;Average;
Total;91.110;55.175;8.496;17.304;7.874;1.201;1.060;0,84;
From 15 to 19 years old;15.661;15.661;..;..;..;..;..;0;
From 20 to 24 years old;16.363;16.363;..;..;..;..;..;0;
From 25 to 29 years old;10.578;10.069;508;..;..;..;..;0,05;
From 30 to 34 years old;2.931;1.502;1.430;..;..;..;..;0,49;
From 35 to 39 years old;13.891;3.192;2.115;4.654;2.730;1.201;..;1,76;
From 40 to 44 years old;14.750;5.005;3.697;4.114;1.934;..;..;1,2;
45 to 49 years;16.935;3.383;746;8.536;3.210;..;1.060;1,93;
Notas:
Fuente: National Statistics Institute