National tables: studies, age and sex. Values Males 18 to 49 years who have had sexual relationships at some time in the last year by age group, studies and use of a prostitute in the last year. Units: thousands of persons ,Total,Yes,No,No data recorded, Total, Total,9,125.5,606.6,8,429.8,89.1, Lower than secondary education,3,849.3,292.0,3,501.4,56.0, Secondary education,3,504.1,236.9,3,241.0,26.2, University,1,772.1,77.8,1,687.4,6.9, From 18 to 29 years of age, Total,3,164.3,227.3,2,927.7,9.3, Lower than secondary education,1,223.9,98.2,1,122.8,2.9, Secondary education,1,440.9,106.9,1,330.4,3.6, University,499.5,22.2,474.5,2.8, From 30 to 39 years of age, Total,3,263.6,241.1,3,001.6,20.8, Lower than secondary education,1,379.1,113.1,1,260.4,5.5, Secondary education,1,181.6,95.1,1,075.4,11.1, University,702.8,32.9,665.8,4.1, From 40 to 49 years of age, Total,2,697.6,138.2,2,500.4,59.0, Lower than secondary education,1,246.3,80.7,1,118.2,47.5, Secondary education,881.6,34.8,835.2,11.5, University,569.7,22.7,547.1,0.0, Notes: 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