On a quick glance, I couldn't see an explanation but I would have thought that the 0.075 is there to cover things like infant mortality, car accidents etc. Interestingly, the 2.075 figure is an average, but given some women will not have children, this means that those that do would need to have on average more than that number to maintain the population, and that just ain't going to happen. [Post edited 5 Feb 2023 8:47]
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