Why have births of newborn babies been dropping precipitously across the world 9 months after Covid vaccines were introduced to child bearing age parents?

Links to detailed analysis of data from across the world. Sources are at these links:
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Taiwan 23% drop in births after vaccination:

Germany first quarter 2022 births dropped off 10.9% from the previous 3 year average.

The UK has had a 10% decline in births:

Switzerland has suddenly had a large drop off in their births:

Sweden same thing, with an accelerating decline in births by month:

Couldn’t have anything to do with the fact that spike protein was accumulating in ovaries and testes?