来自《耶鲁大学开放课程：金融市场 第18集 第18集》

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  important as we moved into the twentieth century
  养老基金变得越来越重要
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  because life expectancy was going up.
  因为人们的平均寿命越来越长
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  There were relatively few people with--
  过去只有很少的人
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  the life expectancy at 1900 was something like forty-five years;
  1900年人们的平均寿命大约是45岁
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  I don't have the exact number.
  我没有确切的数据
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  So, sixty was a milestone that a lot of people didn't reach.
  60岁是一个多数人无法到达的里程碑
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  Of course, many did as well, so it's not--
  当然 许多人活到了那个年纪
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  this was important even then.
  所以即使在当时这个基金也是很重要的
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  The original pension funds tended to be done for
  最初的养老基金
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  the benefit of the employer in the sense that,
  似乎是为了雇主的利益而设立的
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  like the American Express,
  比如说在美国运通
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  you had to work there for
  为了得到养老金