Ключевые слова: advanced age, age, aging society, benefit, coin, cost, countermeasure, deposit, design, economic, elderly, finance, fund, future, good, green, grow, growth, increase, investment, living, male, man, money, old, oldage, pension, people, person, pile, policy, population, preparation, proportion, retired life, retirement, save, sitting, support, swell, system, tree, welfare,