There aren’t a lot of solid research studies that look at the percentage of people who are interested in dominance and submission. The National Center for Sexual Freedom states that between 5-10% of the U.S. population has engaged in “diverse practices for sexual pleasure on at least an occasional basis, with most incidents being either mild or staged activities involving no real pain or violence.”
The Kinsey Institute cites one study that found that 11% of heterosexual females preferred a dominant role when engaging in bondage.
"You do not have to be good. You do not have to walk on your knees for a hundred miles through the desert, repenting. You only have to let the soft animal of your body love what it loves." ~Mary Oliver http://twitter.com/oliverholla