OECD 人口統計 高齢者割合 各国の65歳以上の人口が全体に占める割合。 <a href="https://data.oecd.org/chart/6qdl" target="_blank" rel="noopener">OECD Chart: Elderly population, Total, % of population, Annual, 1970 – latest</a> <a href="https://data.oecd.org/chart/6qdD" target="_blank" rel="noopener">OECD Chart: Elderly population, Total, % of population, Annual, last 5 years</a> <a href="https://data.oecd.org/chart/6qdn" target="_blank" rel="noopener">OECD Chart: Elderly population, Total, % of population, Annual, 1970 – latest</a> 若年層割合 <a href="https://data.oecd.org/chart/6qds" target="_blank" rel="noopener">OECD Chart: Young population, Total, % of population, Annual, 1970 – latest</a> <a href="https://data.oecd.org/chart/6qdB" target="_blank" rel="noopener">OECD Chart: Young population, Total, % of population, Annual, last 5 years</a> <a href="https://data.oecd.org/chart/6qdu" target="_blank" rel="noopener">OECD Chart: Young population, Total, % of population, Annual, 1970 – latest</a> 労働年齢人口 <a href="https://data.oecd.org/chart/6qdF" tarFet="_blank">OECD Chart: Working age population, Total, % of population, Annual, 1970 – latest</a> <a href="https://data.oecd.org/chart/6qdR" target="_blank" rel="noopener">OECD Chart: Working age population, Total, % of population, Annual, last 5 years</a> <a href="https://data.oecd.org/chart/6qdT" target="_blank" rel="noopener">OECD Chart: Working age population, Total, % of population, Annual, 1970 – latest</a>