 Imibare ikigo National Survey of Sexual Attitudes and Lifestyles Natsal cyahaye BBC ivuga ko mu 2003 hejuru ya 43 yabagabo bari hagati yimyaka 16 na 24 bagize uko bigenza mu byumweru bine byari bishize babazwa bavuze ko buri nshuro yose bakoresheje agakingirizo. 