Artificial intelligent assistant

What is the meaning of 「一人」in the following sentence? > **** Now, the amount of women that give birth to a child is decreasing. That is to say, the declining birth rates are advancing. What is the role of ? To me, the sentence still makes sense without it. What is the difference between the following sentences? > **** … > > …

I would interpret it like this:

>

The number of children that women give birth to.

> ****

The number of children that **one** woman gives birth to. In other words, the number of children born per woman.

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