Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years currently No. of live births contraceptive practices. Unidades: relative figures ,Total,Never has used method,Has used before, but not currently,Currently use one efficient method,Currently use one inefficient method, Total,100,27,44,16,28,53,17,3,11, None,100,49,55,12,36,37,05,1,05, One,100,8,11,24,97,63,34,3,59, Two,100,7,81,16,4,70,53,5,25, Three,100,8,72,19,75,65,88,5,66, Four,100,7,01,18,9,67,63,6,46, Five and more,100,11,55,27,32,53,8,13, Notas: Fuente: National Statistics Institute