First of all, that is "stars added in that year", not "stars total". Secondly, shouldn't the fact that that would have made Polymer #3 given you some thought?

First of all, that is "stars added in that year", not "stars total". Secondly, shouldn't the fact that that would have made Polymer #3 given you some thought? Polymer has ~19k stars total. React has ~85k stars total. Vue has ~80k stars total. AngularJS (v1) has ~58k stars total. Angular (v2+) has ~32k stars total. Ember has ~18.6k stars total. Preact has ~17k stars total. So Polymer is behind React, Vue, AngularJS and Angular on total stars, having just surpassed Ember. Placing it 3rd in the rising stars list would have placed it before Angular. I'd think "Polymer is more popular than Angular" would have been pretty newsworthy.