You need more than 2.0 to compensate for child to young people death. The replacement rate varies per country, details here: https://en.wikipedia.org/wiki/Sub

You need more than 2.0 to compensate for child to young people death. The replacement rate varies per country, details here: https://en.wikipedia.org/wiki/Sub-replacement_fertility https://en.wikipedia.org/wiki/Sub-replacement_fertility