What caused the accelerated rate?

in india, the long term trend of less births each year repeated... as expected BUT ever since corona virus vaccine the rate accelerated.

instead of a steady rate 1.2% less each year, at same rate, ever since the vax, the decrease accelerated

What caused the accelerated rate?

1.23% is only 0.0123 but of a population of india 1,000,000,000 that balances to 100000x 122=12.2 million so an annual change of 100,000

then a change of 200,000 less.

to hide the pattern over 3 years the future projection is not 1.25 nor 1.27... nor the logical 1.29!

but nobody knows the future... the observed fact is the decrease rate accelerated. how would you explain the rate change?

What caused the accelerated rate?
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