The human population of earth is estimated to be 7 billion right now, and that's the most it has every been at one time. (religion.blogs.cnn.com)
Lake Victoria, located at the intersection of Uganda, Kenya, and Tanzania, is so large that if the entire population of Earth went for a swim they'd each have a roomy hundred or so square feet to themselves. (howtogeek.com)
The best estimate which we can make of this comes from the attempt to find out the average population of Bethlehem, from Micah down to the present time, and divide it by the average population of the earth during the same period. (redeeminggod.com)