Click to see Gapminder World showing number of children per women (vertical) and child mortality (horizontally) for the countries of the world in 1960. (each bubble=one country). Back in 1960 there was a developing world with many children and high child mortality!
Click Play and watch how child mortality falls and then how also number of children falls http://www.bit.ly/lnwfQk
Today most countries are down in the small family low child mortality corner! And therefore the “Peak Number of Children” has now been reached, as the countries with less than 2 children per women compensate for the one of seven billion people that still have more than 3 chiuldren per women.