A line chart showing the percentage of American high school seniors who meet up with friends every day, split by gender, from 1979 to 2017. Percentages for both genders are constant or very slowly declining until the 2000s, and then they drop precipitously. In 2001, 51% of male high school seniors met up with friends every day, compared to, to 31% of males in 2017. In 2001, 44% of female high school seniors met up with friends every day, compared to 28% in 2017.