Or is it just intertemporal substitution?:
Two years after having one of the lowest birth rates in the
world, Georgia [the country] is enjoying something of a baby boom, following an
intervention from the country's most senior cleric.
the end of 2007, in a move to reverse the Caucasian country's dwindling
birth figures, the head of the Georgian Orthodox Church, Patriarch Ilia
II, came up with an incentive. He promised to personally baptise any
baby born to parents of more than two children.
There was only one catch: the baby had to be born after the initiative was launched.
The results are, in the words of the Georgian Orthodox Church, "a miracle".
…The country's birth rate increased by nearly 20% during 2008 – a rate four times faster than the previous year.
Many parents say they took the decision to have another child on the basis of the Patriarch's incentive.
Here is the full article and I thank John Chilton for the pointer.