Universal access has been virtually reached in lower secondary education. The proportion of adults who have attained at least upper secondary education grew from 41% for the generation aged 55-64 in 2015 to 80% for the generation aged 25-34 in the same year. However, in upper secondary education, improvements in completion and retention rates have not been sustained in the recent past and about 20% of a cohort does not reach the final year of upper secondary education. Rates of completion within the nominal time (4 years) only reached 59% in 2014.