By 26 years old, how likely will I develop a Class 6 or 7 pattern of balding?

I don’t have the study done by Norwood and Shiell, but my memory is good that 7% of balding men (which is half of all men) will be a Class 7 by the age of 26. I suspect that the number for a Class 6 will be in the 15-25% range, but I don’t remember for sure. I did find this on the internet chart to point you to the age distribution for the Norwood Class 2-4 by age distribution to 40 years of age