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人口压力引发出火山的真正爆发部分在于世界人口的老龄化。一个新的人类阶层正在形成。我们的社会将在人类历史上第一次形成一个非常庞大的经济上不活跃的老龄阶层,他们是富有的选民,他们需要昂贵的社会服务,如医疗保健,他们的大部分收入有赖于政府的支出。他们正在拖垮社会福利国家,损害政府的财政,并威胁社会为未来的成功需要进行的投资。1900年,美国人口中65岁以上的老龄人只有4%,现在65岁以上的人口占总人口的13%。2013年以后美国老龄人数量的增长将会极快,因为婴儿激增时代,即1947年最先出生的那一代,将成为65岁的老人,并开始退休。现在是四个半在职职工支付一个人的养老金,到2030年平均只有1.7个在职职工可以纳税支付一个人的养老金。
Part of the real outbreak of volcanoes caused by population pressure is the aging of the world's population. A new human class is taking shape. For the first time in our history, our society will form a very large and economically inactive aging population. They are wealthy voters who need expensive social services such as health care. Most of their income depends on the government's expenditure. They are collapsing social welfare states, undermining the government's finances and threatening society's investment for the future success. In 1900, only 4% of the elderly population over the age of 65 in the U.S. population now accounted for 13% of the total population. The growth in the number of elderly Americans in the United States will be extremely rapid after 2013, as the infant infancy, which was first born in 1947, will become a 65-year-old and begin to retire. It is now four and a half serving workers who pay one person's pension, and on average only 1.7 active workers by 2030 can pay one person's pension.