What is the meaning of 「一人」in the following sentence?


> 今、女性 **一人** が生む子どもの数が減ってきている。つまり、少子化が進んできている。 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 「一人」? To me, the sentence still makes sense without it.

What is the difference between the following sentences?

> 今、女性 **一人** が生む子どもの数…
>
> 今、女性が生む子どもの数…




I would interpret it like this:

> 女性が生む子どもの数

The number of children that women give birth to.

> 女性 **一人** が生む子どもの数

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




I would interpret it like this:

> 女性が生む子どもの数

The number of children that women give birth to.

> 女性 **一人** が生む子どもの数

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

