Detail  old-age dependency ratio age dependency ratio of the old; old-age index 老年人口指数; 老齢人口依存比率   rōnen jinkō shisū; rōrei jinkō izon hiritsu Altersabhängigkeitsquotient; Altenindex; Altenquotient; Altenlastquotient; Altenlastquote; Alterslastquote; Altenkoeffizient Comment