Encuesta de Fecundidad
Characteristics marriages / couples and exposure to pregnancy risk. Women  15-49 years
Females married sometime or with a partner, who 1st marriage or relation finished  level of studies  duration of 1st marriage  or relation (years). 
Unidades: Relative figures

;Total;Under 5 years old;From 5 to 9 years old;From 10 to 14 years old;From 15 to 19 years old;20 years old and over;
Total;100;88,36;6,2;3,27;2,11;0,05;
Illiterate;100;78,16;21,84;..;..;..;
Without studies;100;64,66;..;14,86;20,48;..;
Primary education and second grade, GBE or first year of GCSE;100;83,01;8,4;5,42;3,05;0,13;
Secondary Education and Post-secondary non-higher;100;92,04;4,58;1,97;1,4;..;
1º, 2º and intermediate technical-professional studies;100;94,43;3,86;1,47;0,24;..;
Higher level technical-professional studies;100;68,7;31,3;..;..;..;
First year of tertiary education;100;92,34;3,56;2,46;1,63;..;
Tertiary education, university graduates and doctors;100;91,84;6,75;0,36;1,04;..;
Notas:
Fuente: National Statistics Institute