Survey on Adult Population Involvement in Learning Activities Social and cultural involvement. Percentage values Persons, by number of books they have at home, sex and highest level of studies completed. Units: percentages Total Between 0 and 25 books Between 26 and 100 books More than 100 books Both sexes Total 100.00 28.56 34.99 35.29 First stage secondary education and lower 100.00 39.97 36.82 21.39 Intermediate-level studies 100.00 21.17 36.60 41.73 Tertiary level and university studies 100.00 10.92 30.10 58.64 Males Total 100.00 30.78 34.43 33.39 First stage secondary education and lower 100.00 43.34 35.82 18.62 Intermediate-level studies 100.00 22.95 37.08 39.44 Tertiary level and university studies 100.00 11.54 29.56 58.44 Females Total 100.00 26.34 35.55 37.19 First stage secondary education and lower 100.00 36.69 37.79 24.09 Intermediate-level studies 100.00 19.23 36.08 44.23 Tertiary level and university studies 100.00 10.32 30.63 58.83 Notes: 1) The Intermediate-level studies category is comprised of: post-secondary education and intermediate-level technical-professional education. Data referring to the 12 months prior to the date of the survey. The symbol '.' shall be deemed as data which cannot be provided since it may be affected by sampling errors. Source: National Statistics Institute