How Many Humans have ever born on Earth ?

How Many Humans have ever born on Earth ?
How many people have ever lived on earth?
Assuming that we start counting from about 50,000 B.C., the time when modern Homo sapiens appeared on the earth. and not from 700,000 B.C. when the ancestors of Homo sapiens appeared, or several million years ago when hominids were present.  taking into account that all population data are a rough estimate, and assuming a constant growth rate applied to each period up to modern times, it has been estimated that a total of approximately 106 billion people have been born since the dawn of the human race, making the population currently alive roughly 6% of all people who have ever lived on planet Earth.