National tables: studies, age and sex. Values Persons 18 to 49 years that have had sexual relationships at some time in their life by sex, age group and studies. Units: thousands of persons ;Total;Lower than secondary education;Secondary education;University; Both sexes; Total;19,524.0;8,126.2;7,248.4;4,149.4; From 18 to 29 years of age;6,746.8;2,365.1;3,055.0;1,326.7; From 30 to 39 years of age;6,851.4;2,817.9;2,409.3;1,624.2; From 40 to 49 years of age;5,925.8;2,943.2;1,784.0;1,198.5; Males; Total;9,967.8;4,292.8;3,815.0;1,860.1; From 18 to 29 years of age;3,516.4;1,381.0;1,595.2;540.2; From 30 to 39 years of age;3,493.0;1,504.4;1,271.3;717.3; From 40 to 49 years of age;2,958.3;1,407.4;948.4;602.6; Females; Total;9,556.2;3,833.4;3,433.4;2,289.3; From 18 to 29 years of age;3,230.4;984.1;1,459.8;786.5; From 30 to 39 years of age;3,358.4;1,313.5;1,138.0;906.9; From 40 to 49 years of age;2,967.4;1,535.8;835.6;596.0; 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