look at how many people made you!

The following chart shows the estimated inbreeding relationship between world population and the number of people who made you, presuming you were born in 1970, and a child of yours born in 2003.

For a child born in 2003, when the estimated world population was 6,300,000,000, his or her ancestors 29 generations back numbered 536,870,912 when the world's estimated population was 284,500,000 -- so, the percentage of inbreeding back then was 188%.