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

	Total	Under 16 years of age	From 16 to 17 years of age	From 18 to 19 years of age	20 years old or above	
Both sexes	
    Total	100.00	12.05	27.80	29.75	30.39	
    Lower than secondary education	100.00	12.03	27.41	30.42	30.14	
    Secondary education	100.00	12.22	28.42	28.68	30.68	
    University	100.00	12.01	29.60	26.73	31.65	
Males	
    Total	100.00	15.89	31.48	28.27	24.35	
    Lower than secondary education	100.00	15.97	30.83	28.64	24.57	
    Secondary education	100.00	17.60	31.78	27.72	22.91	
    University	100.00	13.45	35.20	26.67	24.68	
Females	
    Total	100.00	8.04	23.97	31.29	36.69	
    Lower than secondary education	100.00	7.93	23.87	32.27	35.93	
    Secondary education	100.00	7.01	25.18	29.60	38.20	
    University	100.00	10.30	22.95	26.80	39.94	
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