National tables: age and sex. Values
Age at first sexual relationship in persons of 18 to 49 years by  sex, age group and type of indicator.
Units: ?

;Total;;From 18 to 29 years of age;;From 30 to 39 years of age;;From 40 to 49 years of age;;
;Average;Standard deviation;Average;Standard deviation;Average;Standard deviation;Average;Standard deviation;
Both sexes;18.6;3.3;17.8;2.6;18.8;3.4;19.3;3.7;
Males;18.1;3.3;17.5;2.6;18.2;3.3;18.8;3.9;
Females;19.1;3.2;18.2;2.5;19.4;3.4;19.8;3.3;
Notes:
Data corresponding to cells with less than 45,000 persons must be used with  caution, because they may be affected by high sample errors.
Source: National Statistics Institute