How exactly is League still growing?

Most LCS views are from 2012 (season 2) and 2013 (season 3) Also the most popular champion spotlights are from 2013 (again season 3) Even the cinematics from those days are more viewed. The current most viewed videos are from 2014 The only thing that has grown over the years is the NA stream viewing for already popular faces like imaqtipie.

If League is growing or at least is not losing players why are the above mentioned things, then the it should not be as drastic as this.