Encuesta de Fecundidad Knowledge and use of contraceptions. Fem. between 15-49 Females between 15 and 49 years cohabitation situation contraceptive practices. Units: absolute figures ;Total;Never has used method;Has used before, but not currently;Currently use one efficient method;Currently use one inefficient method; Total;10,165,237;2,789,179;1,654,807;5,404,945;316,307; With spouse;5,247,338;462,939;1,010,582;3,511,178;262,639; With stable partner in the household;386,866;21,023;62,273;285,324;18,246; With stable partner out of household;1,617,623;408,166;66,955;1,122,709;19,794; With occasional relations;419,345;116,288;45,405;242,903;14,748; Another situation;2,494,064;1,780,763;469,592;242,829;880; Notes: Source: National Statistics Institute