What percentage of women dye their hair?

If they all do it then isn't it just arbitrary? One women told me that she dyed her hair because it was mousy. OK, so there is a good reason maybe. But do all women have mousy hair? Take this challenge: offer a friend $1, $5, $10, whatever, if they can find a women in Fry's, Safeway, Best Buy or the local mall who doesn't have dyed hair. You will not go broke. Beauty tip: Your natural hair color is perfect for your skin tone!