At what age do most caucasian boys start shaving their face/grow facial hair?

16At what age do most caucasian boys start shaving their face/grow facial hair?
Ask your father and grandfather to get a good idea on what your genes will do to your body. I've had friends start at 12 and some who never shaved until their early 20's.At what age do most caucasian boys start shaving their face/grow facial hair?
15
15 or 16