National tables: studies, age and sex. Values
Persons 18 to 49 years who have had sexual relationships at some time    in their life by sex, parents' highest level of studies and  use of condom in first sexual relationship.
Units: thousands of persons

;Total;Yes;No;Don't remember;
Both sexes;
    Total;19,524.0;10,681.0;8,192.9;650.1;
    Lower than secondary education;14,367.9;7,625.0;6,249.1;493.8;
    Secondary education;2,585.8;1,575.0;940.4;70.4;
    University;2,059.3;1,229.1;766.2;64.1;
    No data recorded;510.9;252.0;237.2;21.7;
Males;
    Total;9,967.8;5,338.6;4,299.3;329.9;
    Lower than secondary education;7,290.0;3,823.8;3,211.3;254.9;
    Secondary education;1,250.9;688.4;538.7;23.8;
    University;1,121.0;674.2;410.0;36.8;
    No data recorded;305.9;152.3;139.3;14.3;
Females;
    Total;9,556.2;5,342.4;3,893.6;320.2;
    Lower than secondary education;7,077.9;3,801.2;3,037.8;238.9;
    Secondary education;1,334.9;886.6;401.7;46.6;
    University;938.3;554.9;356.2;27.2;
    No data recorded;205.0;99.7;97.9;7.5;
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