This is a very difficult thing for a woman to go through, and very few would go through the trouble of lying about it. She usually leads the guy on. It is rape when a woman is forced against her will to have sex no matter what she is wearing or how she behaves.
Victims are of every race, age, geographical location, and socioeconomic status.
If I am out with my friends, then I am safe. This is known as acquaintance rape, and it is the most common type. Therefore, the percentage is probably much higher. Aggression and dominance are their primary motives, not sexual fulfillment. In one study of 300 convicted rapists, very few were diagnosed as mentally or emotionally ill.