According to one demographer writing for National Geographic, the amount of people on this planet currently alive is only 6.5% of the total number of people who have ever lived.
According to his calculations (assuming a beginning of humanity and a crude birth rate):
- There are 7 billion people on the Earth now
- 140 million people are born each year
- 57 million people die each year
- There have been 108 billion humans since our evolution