Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Females married sometime or with a partner by size ofmunicipality of residence 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 Up to 10,000 inhabitants 10,3 0,2 0,6 3,2 7,9 13,1 16,3 21,3 From 10,001 to 50,000 inhabitants 10,2 0,4 0,5 3,5 7,6 12,9 17,8 21,5 From 50,001 to 500,000 inhabitants 9,6 0,1 0,4 2 6,5 11,9 17,3 20,4 More than 500,000 inhabitants 9,1 0 0,1 2,1 6,4 11,9 15,5 19,7 Notas: Fuente: National Statistics Institute