4003
1 2018

YouTube, Instagram Snapchat – - .

95% 45% – .

monkeybusiness / Depositphotos

, 13-17 .

, , .

31% . , , ' .

24% – . , .

45%  , , .

, 2014-2015 Facebook. 71% , – 51%.

Snapchat (35%) YouTube (32%). 15% – nstagram.

10% , Facebook.

Twitter, Reddit Tumblr.