Encuesta de Fecundidad
Females who got married sometime with any child live birth
Fem., 15-49 years, married sometime, at least one child live birth.  level of studies  duration of protogenesic interval. 
Unidades: absolute figures

;Total;Negative;From 0 to 7 months;From 8 to 11 months;From 12 to 23 months;From 24 to 35 months;From 36 to 47 months;From 48 to 59 months;60 and over;Average;
Total;5.184.346;235.280;821.233;907.262;1.464.503;685.365;418.092;201.301;451.311;22,93;
Illiterate;17.859;538;3.280;3.313;6.981;1.749;1.999;..;..;11,26;
Without studies;166.943;10.579;26.923;46.537;51.563;12.168;13.405;712;5.056;14,52;
Primary education and second grade, GBE or first year of GCSE;3.009.921;159.624;540.209;624.080;848.267;344.895;212.649;82.187;198.010;18,99;
Secondary Education and Post-secondary non-higher;616.559;18.398;91.375;57.820;195.404;86.783;52.359;34.609;79.812;29,11;
1º, 2º and intermediate technical-professional studies;725.685;33.653;114.069;97.793;179.208;120.378;57.891;42.246;80.447;27,79;
Higher level technical-professional studies;6.799;..;573;..;2.103;1.267;2.198;..;659;30,93;
First year of tertiary education;292.790;5.105;26.854;38.594;91.393;48.268;32.784;15.533;34.258;29,9;
Tertiary education, university graduates and doctors;347.790;7.383;17.950;39.125;89.583;69.858;44.808;26.014;53.069;34,48;
Notas:
Fuente: National Statistics Institute