Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Females married or with a partner level of studies situation relative to exposure to risk of pregnancy. Unidades: Absolute figures Total Currently pregnant Non pregnant, female sterilized Non pregnant, male sterilized Non pregnant, female sterile Non pregnant, female exposed to risk of pregnancy Total 7.251.828 219.025 470.647 498.853 297.972 5.765.330 Illiterate 20.602 .. 1.174 .. 1.060 18.367 Without studies 169.299 3.755 27.253 6.153 16.187 115.951 Primary education and second grade, GBE or first year of GCSE 3.573.537 91.120 291.561 319.098 169.625 2.702.133 Secondary Education and Post-secondary non-higher 1.179.812 24.831 38.498 36.943 32.403 1.047.136 1º, 2º and intermediate technical-professional studies 1.186.230 43.383 66.370 88.624 32.699 955.153 Higher level technical-professional studies 34.532 .. .. 681 298 33.554 First year of tertiary education 452.482 21.265 28.391 25.651 10.496 366.680 Tertiary education, university graduates and doctors 635.334 34.671 17.400 21.703 35.205 526.355 Notas: Fuente: National Statistics Institute