@techreport{OECD (Organization of Economic Co-operation and Development)2023,
author = {OECD (Organization of Economic Co-operation and Development)},
title= {Old-age dependency ratio (indicator)},
year = {2023},
URL = {https://www.oecd.org/en/data/indicators/old-age-dependency-ratio.html},
publisher = {OECD Publishing},
address = {Paris},
}