What Percent of Men Keep Frontal Hair After Taking Propecia for Over 5 Years?

I been reading that 90% of men still retain their hair on Propecia even after 5 years on the crown and mid anterior. But i couldn’t find any info about the front. I know it works there too but can it retain the front for 90% of men after 5 years as well? Or is that number a lot less?

From my experience, the same seems to apply (what happens in the mid-anterior head will happen in the frontal area) providing that the Propecia (finasteride 1mg) is strictly adhered to. Without a good controlled study, I can not be sure.