There simply wouldn't be enough resources to deal with 1.4875 billion 
people emerging at once (this of course assumes everyone gets
pregnant at the same time)....the logistics alone would cause chaos.  and
once that occurs, you get war, reducing the male population even
further...see my point?

of course, why would the population increase so fast?  why bother?

there is gonna be a certain movement to keep things slow..  considering,
this is going to reduce world population to manageble levels for the first
time in decades..