Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, have not used or use contracep. size of municipality of residence number of live births. Units: relative figures ,Total,None,One,Two,Three,Four,Five and more, Total,100.00,84.24,4.56,7.56,2.68,0.49,0.47, Up to 10,000 inhabitants,100.00,79.70,5.15,9.82,5.06,0.27,.., From 10,001 to 50,000 inhabitants,100.00,83.09,5.45,8.58,2.03,0.29,0.57, From 50,001 to 500,000 inhabitants,100.00,86.00,3.88,6.30,2.59,0.58,0.65, More than 500,000 inhabitants,100.00,87.54,4.21,6.21,0.69,0.81,0.54, Notes: Source: National Statistics Institute