National tables: age and sex. Values Persons who have had sexual relationships with new partners in the last year by age group and sex. Units: Thousands of persons Both sexes Males Females Total 2,656.4 1,807.9 848.4 From 18 to 29 years of age 1,578.7 1,041.1 537.6 From 30 to 39 years of age 770.7 522.9 247.8 From 40 to 49 years of age 307.0 243.9 63.0 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