Young adults have consistently been the heaviest users of social media by a substantial margin, and today that’s even more true: a staggering 90% of them use social media, according to a 2015 Pew Research Center study. That’s a 78% increase from the 12% who were using social media back in 2005. Another Pew study found that 82% of young adults that are online use Facebook, and about 55% of this crowd uses Instagram, says the Pew study. Rounding out the mediums covered by the report is Twitter, used by about 32% of this population.