Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Females between 15 and 49 years level of studies actual age (years). Unidades: Relative figures 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 100 13,03 15,65 15,86 15,56 14,7 13,22 11,97 Illiterate 100 .. 3,01 18 23,04 5,56 11,79 38,59 Without studies 100 4,4 .. 2,1 11,63 16,7 23,85 41,33 Primary education and second grade, GBE or first year of GCSE 100 17,02 8,09 11,58 14,79 15,81 16,9 15,81 Secondary Education and Post-secondary non-higher 100 20,43 29,88 13,47 10,26 11,35 7,27 7,34 1º, 2º and intermediate technical-professional studies 100 6,13 24,61 22,04 19 13,67 8,45 6,1 Higher level technical-professional studies 100 5,24 24,55 43,38 12,93 10,7 2,42 0,78 First year of tertiary education 100 0,11 16,83 21,58 20,83 16,48 13,68 10,49 Tertiary education, university graduates and doctors 100 0,19 11,38 30,02 21,91 16,71 13,11 6,68 Notas: Fuente: National Statistics Institute