Austria

Austria https://www.cia.gov/library/publications/the-world-factbook/geos/au.html
Age structure:
This entry provides the distribution of the population according to age. Information is included by sex and age group as follows: 0-14 years (children), 15-24 years (early working age), 25-54 years (prime working age), 55-64 years (mature working age), 65 years and over (elderly). The age structure of a population affects a nation's key socioeconomic issues. Countries with young populations (high percentage under age 15) need to invest more in schools, while countries with older population . . .
Age structure field listing
0-14 years: 14% (male 630,739 /female 600,663)
15-24 years: 10.82% (male 484,515 /female 467,064)
25-54 years: 42.1% (male 1,851,209 /female 1,851,100)
55-64 years: 13.63% (male 595,146 /female 603,249)
65 years and over: 19.44% (male 743,174 /female 966,511) (2018 est.)

Dependency ratios:
Dependency ratios are a measure of the age structure of a population. They relate the number of individuals that are likely to be economically "dependent" on the support of others. Dependency ratios contrast the ratio of youths (ages 0-14) and the elderly (ages 65+) to the number of those in the working-age group (ages 15-64). Changes in the dependency ratio provide an indication of potential social support requirements resulting from changes in population age structures. As fertility leve . . .
Dependency ratios field listing
total dependency ratio: 49.2 (2015 est.)
youth dependency ratio: 21.1 (2015 est.)
elderly dependency ratio: 28.1 (2015 est.)
potential support ratio: 3.6 (2015 est.)