Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, have not used or use contracep., absolute fig. level of studies number of live births. Units: absolute figures ,Total,None,One,Two,Three,Four,Five and more,Average, Total,2,789,179,2,349,707,127,298,210,917,74,671,13,615,12,971,0.32, Illiterate,8,526,4,236,..,..,869,783,2,638,2.40, Without studies,44,913,13,137,4,318,10,121,9,220,4,702,3,414,1.99, Primary education and second grade, GBE or first year of GCSE,1,316,306,1,020,032,86,640,150,247,50,302,6,767,2,319,0.44, Secondary Education and Post-secondary non-higher,692,578,655,287,14,103,17,204,4,252,995,736,0.10, 1º, 2º and intermediate technical-professional studies,372,085,336,690,12,366,13,327,8,144,368,1,190,0.19, Higher level technical-professional studies,10,049,9,751,298,..,..,..,..,0.03, First year of tertiary education,159,194,142,856,6,986,7,467,1,884,..,..,0.17, Tertiary education, university graduates and doctors,185,529,167,717,2,587,12,552,..,..,2,674,0.22, Notes: Source: National Statistics Institute