Only 69% of young men would not try to have sex with someone who did not want to, and one in 20 said they would try to have sex with someone who was asleep, according to a shocking 2010 survey of young people aged between 18 and 25 by the Havens, the specialist London-based sexual assault referral centres. A significant proportion also seemed confused about what constitutes rape: only 77% of young men agreed that having sex with someone who has said no was rape. While in 2009, a study for the NSPCC found a third of girls aged between 13 and 17 who were in relationships had experienced unwanted sexual acts, and one in 16 had been raped.