Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years size of municipality of residence contraceptive practices. Units: relative figures ,Total,Never has used method,Has used before, but not currently,Currently use one efficient method,Currently use one inefficient method, Total,100.00,27.44,16.28,53.17,3.11, Up to 10,000 inhabitants,100.00,28.18,15.50,51.25,5.07, From 10,001 to 50,000 inhabitants,100.00,24.84,15.98,55.91,3.27, From 50,001 to 500,000 inhabitants,100.00,28.30,16.55,52.82,2.33, More than 500,000 inhabitants,100.00,28.28,17.07,52.53,2.11, Notes: Source: National Statistics Institute