National tables: studies, age and sex. Percentages Rate of persons who have had more than one sexual partner in the last year by sex, age group and studies. Units: percentages Total Lower than secondary education Secondary education University Both sexes Total 22.30 22.96 23.49 19.21 From 18 to 29 years of age 33.89 37.89 33.10 29.32 From 30 to 39 years of age 18.14 18.00 19.29 16.72 From 40 to 49 years of age 13.37 15.02 12.51 11.14 Males Total 29.82 32.81 28.64 26.41 From 18 to 29 years of age 43.22 47.32 40.61 41.44 From 30 to 39 years of age 25.11 27.05 22.95 25.38 From 40 to 49 years of age 19.06 23.78 16.50 14.15 Females Total 14.81 12.81 17.86 13.40 From 18 to 29 years of age 24.43 25.77 25.27 21.42 From 30 to 39 years of age 11.10 8.35 15.25 9.63 From 40 to 49 years of age 7.90 7.81 7.86 8.14 Notes: 1) Rate calculated as regards the population of 18 to 49 year olds who have had sexual relationships in the last year Data corresponding to cells with less than 45,000 persons must be used with caution, because they may be affected by high sample errors. Source: National Statistics Institute