Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years, use or have used contraceptions actual age (years) medical advice for use of contraceptions. Units: relative figures ;Total;Does not visit a medical center;Visits a public center;Visits a private center; Total;100.00;48.63;33.74;17.63; From 15 to 19 years old;100.00;75.43;19.24;5.33; From 20 to 24 years old;100.00;62.90;28.08;9.02; From 25 to 29 years old;100.00;50.77;32.86;16.36; From 30 to 34 years old;100.00;40.21;41.13;18.66; From 35 to 39 years old;100.00;41.74;36.84;21.41; From 40 to 44 years old;100.00;44.47;33.27;22.27; 45 to 49 years;100.00;51.32;30.01;18.68; Notes: Source: National Statistics Institute