National tables: age and sex. Values
Age at first sexual relationship in persons of 18 to 49 years by  sex, age group and type of indicator.
Units: ?

	Total		From 18 to 29 years of age		From 30 to 39 years of age		From 40 to 49 years of age		
	Average	Standard deviation	Average	Standard deviation	Average	Standard deviation	Average	Standard deviation	
Both sexes	18.6	3.3	17.8	2.6	18.8	3.4	19.3	3.7	
Males	18.1	3.3	17.5	2.6	18.2	3.3	18.8	3.9	
Females	19.1	3.2	18.2	2.5	19.4	3.4	19.8	3.3	
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