National tables: studies, age and sex. Percentages Males 18 to 49 who have used a prostitute at some time in their life by age group and studies. Units: percentages Total Total 25.78 Lower than secondary education 29.01 Secondary education 24.75 University 20.43 From 18 to 29 years of age Total 20.42 Lower than secondary education 24.60 Secondary education 19.13 University 13.78 From 30 to 39 years of age Total 26.55 Lower than secondary education 27.91 Secondary education 27.64 University 21.76 From 40 to 49 years of age Total 31.89 Lower than secondary education 34.92 Secondary education 31.40 University 25.51 Notes: 1) Percentage calculated with regards total of males 18 to 49 years old 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