Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Single females who have had a partner, who 1st relation finished occupational history duration of the 1st 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;96,56;1,56;0,54;1,33;..; Previously worked sometime;100;95,7;1,96;0,68;1,66;..; Have never worked;100;100;..;..;..;..; Notas: Fuente: National Statistics Institute