The condom is the most popular form of contraception used by teenagers. Among sexually active 15- to 19-year-olds, from 2002 to 2010 more than 80% of females and more than 90% of males reported using at least one method of birth control during their last intercourse. In 1995, only 71% of girls and 82% of boys reported using contraception the last time they had sex. In 2006–2010, one in five sexually active female teens (20%) and one-third of sexually active male teens (34%) reported having used both the condom and a hormonal method the last time they had sex. Less than 20% of girls at risk for unintended pregnancy were not using any contraceptive method the last time they had sex. Calendar abstinence, or the rhythm method, was used by 17% of female teens in 2006–2008.