Encuesta de Fecundidad Charac. married couples or couples and expos. risk of preg. Fem.15-49 years Females between 15 and 49 years size of municipality of residence Cohabitation situation. Units: Relative figures ;Total;With spouse;With stable partner in the household;With stable partner out of household;With occasional relations;Another situation; Total;100.00;51.62;3.81;15.91;4.13;24.54; Up to 10,000 inhabitants;100.00;57.01;3.65;12.76;3.92;22.66; From 10,001 to 50,000 inhabitants;100.00;57.42;4.91;15.30;2.17;20.19; From 50,001 to 500,000 inhabitants;100.00;48.45;3.26;17.25;4.60;26.44; More than 500,000 inhabitants;100.00;43.62;3.63;17.86;6.08;28.81; Notes: Source: National Statistics Institute