National tables: age and sex. Percentages Persons 18 to 49 years by sex, age group and preferred source of sexual information. Units: percentages ;Total;Old parents or relatives;Siblings or friends;Partner;Professionals;Various support;Nobody; Both sexes; Total;100.00;12.39;38.78;19.59;10.28;12.11;6.84; From 18 to 29 years of age;100.00;16.92;38.32;15.40;13.57;10.59;5.20; From 30 to 39 years of age;100.00;10.15;40.05;20.99;9.68;13.11;6.03; From 40 to 49 years of age;100.00;9.23;37.89;23.31;6.77;12.90;9.90; Males; Total;100.00;10.56;43.92;14.98;9.90;13.30;7.34; From 18 to 29 years of age;100.00;14.46;41.95;12.21;12.69;12.44;6.24; From 30 to 39 years of age;100.00;9.03;45.97;16.80;8.47;13.42;6.30; From 40 to 49 years of age;100.00;7.23;44.07;16.47;7.94;14.29;10.01; Females; Total;100.00;14.28;33.52;24.31;10.66;10.90;6.34; From 18 to 29 years of age;100.00;19.50;34.51;18.75;14.50;8.64;4.10; From 30 to 39 years of age;100.00;11.29;33.99;25.27;10.91;12.79;5.75; From 40 to 49 years of age;100.00;11.22;31.77;30.09;5.61;11.52;9.79; 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