S: STATISTICS AUSTRIA, Labour Force Survey (Microcensus). Yearly average. Compiled on 19 April 2012 The indicator "Youth education attainment level" is defined as the percentage of young people aged 20-24 years having attained at least upper secondary education attainment level, i.e. with an education level ISCED 3a, 3b or 3c long minimum (numerator). The denominator consists of the total population of the same age group. - *) Break in time series.