I am pulling this out of thin air too, but I would think that the WHO statistic for CS is an IDEAL.

If there are so many births per capita, then what percentage of those are deemed necessary cs (life saving, for mum and bub) as opposed to how many are "elective" (I use this term loosely)
I know there are stats available for some hospitals in regards to this..
Can;t remember where I was going with this but anyway...