Is there a census for every person on the planet? If not, what percentage if the population do you think is accounted for?
Theoretically, if a level of international cooperation that has never been seen before were ginned up, it ought to be possible. Except that there are countries that do not produce any statistics because they haven’t gotten their shit together for one reason or another. For example: Western Sahara. You can never find any statistics or data from there.