Encuesta de Fecundidad Characteristics marriages / couples and exposure to pregnancy risk. Women 15-49 years Females between 15 and 49 years size of municipality of residence Cohabitation situation. Unidades: Absolute figures ;Total;With spouse;With stable partner in the household;With stable partner out of household;With occasional relations;Another situation; Total;10.165.237;5.247.338;386.866;1.617.623;419.345;2.494.064; Up to 10,000 inhabitants;2.202.703;1.255.741;80.496;281.035;86.258;499.173; From 10,001 to 50,000 inhabitants;2.437.518;1.399.709;119.634;372.993;52.962;492.220; From 50,001 to 500,000 inhabitants;3.765.059;1.824.192;122.834;649.351;173.112;995.570; More than 500,000 inhabitants;1.759.957;767.697;63.902;314.245;107.013;507.100; Notas: Fuente: National Statistics Institute