National tables: age and sex. Values Persons 18 to 49 years by sex, age group and preferred source of sexual information. Units: Thousands of persons ;Total;Old parents or relatives;Siblings or friends;Partner;Professionals;Various support;No data recorded; Both sexes; Total;20,759.6;10,771.8;2,568.9;1,033.9;5,225.5;703.6;456.0; From 18 to 29 years of age;7,679.9;3,641.9;1,341.6;355.8;1,907.9;280.9;151.8; From 30 to 39 years of age;7,043.6;3,707.3;785.5;378.0;1,797.6;200.3;174.9; From 40 to 49 years of age;6,036.1;3,422.5;441.8;300.1;1,520.0;222.4;129.3; Males; Total;10,532.1;4,854.9;1,656.9;580.2;2,769.8;376.4;293.9; From 18 to 29 years of age;3,932.5;1,642.4;870.2;229.5;962.3;148.0;80.1; From 30 to 39 years of age;3,584.4;1,680.7;515.4;199.5;934.2;117.3;137.4; From 40 to 49 years of age;3,015.2;1,531.8;271.3;151.1;873.3;111.2;76.4; Females; Total;10,227.5;5,916.9;911.9;453.7;2,455.7;327.2;162.0; From 18 to 29 years of age;3,747.4;1,999.5;471.4;126.3;945.6;132.9;71.7; From 30 to 39 years of age;3,459.2;2,026.6;270.1;178.5;863.4;83.1;37.5; From 40 to 49 years of age;3,020.9;1,890.7;170.4;149.0;646.7;111.3;52.8; 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