Across the rich world, almost every state faces a version of the same problem: their people are living longer and having fewer children. Every year, tens of thousands of citizens will hit state pension age or retire, and fewer of us are having enough children to maintain our care-dependency ratio (the number of working people supporting those who are too young, too old or too sick to work themselves) at a point that provides the standard of public services and the levels of tax that modern electorates have grown accustomed to.
在manbetx app苹果 富裕国家中，几乎每一个国家都在面对同样问题的不同版本：人口寿命不断延长，而生育率却持续下降。每年都有成千上万的公民达到国家养老金领取年龄或选择退休，但与此同时，新生儿数量不足，难以将抚养比（即劳动人口所供养的对象，包括因年幼、年老或疾病而无法工作的群体）维持在足以支撑当代选民所习以为常的公共服务水准和税收水平的程度。
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