Encuesta de Fecundidad
Characteristics marriages / couples and exposure to pregnancy risk. Women  15-49 years
Females married sometime or with a partner by level ofstudies and actual age (years).
Unidades: Average duration (years)

	Total	From 15 to 19 years old	From 20 to 24 years old	From 25 to 29 years old	From 30 to 34 years old	From 35 to 39 years old	From 40 to 44 years old	From 45 to 49 years old	
Total	9,8	0,2	0,4	2,7	7,2	12,4	16,9	20,7	
Illiterate	14,5	..	4	7,7	16,9	8,2	13,9	18,1	
Without studies	19,8	3,8	..	9,1	12,5	14,5	21	24,1	
Primary education and second grade, GBE or first year of GCSE	12,5	0,2	1,1	4,1	8,6	13,9	17,6	21,5	
Secondary Education and Post-secondary non-higher	6,5	0	0,2	1,7	6	10,8	16,4	18,6	
1º, 2º and intermediate technical-professional studies	7,2	0,1	0,2	2,7	6,6	11,9	17,3	20,5	
Higher level technical-professional studies	2,8	0	0,2	1,9	4,9	8,7	12,9	20	
First year of tertiary education	8,1	0	0,2	1,5	5	11,2	14,4	19,1	
Tertiary education, university graduates and doctors	5,9	..	0	0,7	4,4	8,7	11,8	14,1	
Notas:
Fuente: National Statistics Institute