You could look at it this way: From 1960 to 2012 the peak publishers increased by 6,817,177 people.
in the same time period the world population increased by 3.9 billion people.*
Do you recall the character in one of Douglas Adams' Hitcherbooks called Wowbagger the infinitely prolonged? He was trying to personally insult everyone in the universe... The joke being that in the time he spent insulting one person, thousands more people had been born in that moment.
It's a bit like that. :)