Survey on Adult Population Involvement in Learning Activities Survey on Adult Population Involvement in Learning Activities. Year 2011 Linguistic skills of persons aged 18 to 65 years old by number of languages they can use, sex and nationality Units: percentage of persons ,None,One,Two,Three or more, BOTH SEX, Total,47.24,34.78,13.45,4.54, Spanish,50.45,33.86,12.20,3.49, Other nationality,27.71,40.36,21.01,10.92, MALE, Total,47.19,34.83,13.34,4.64, Spanish,51.02,33.63,11.77,3.58, Other nationality,22.89,42.46,23.30,11.35, FEMALE, Total,47.29,34.71,13.56,4.44, Spanish,49.87,34.08,12.65,3.39, Other nationality,32.26,38.38,18.85,10.51, Notes: 1) Mother tongues are excluded Data referring to 12 months before the date of the survey. '.' must be understood as data that cannot be given as it might be affected by sampling errors. Source: National Statistics Institute