Is your moustache or beard stealing your beer?

From Spittoon:

Are stout drinkers more inclined to grow a moustache than non-stout drinkers? What about beards? Are long-bearded predisposed to drink stout than others? I ask as apparently 162,719 pints of Guinness are lost in stout drinker's moustaches and beards every year. Seems an awfully exact number