I have a responsive design web site (with responsive ad units) with increasing users, sessions and pageviews and decreasing adsense revenue. Mobile traffic is increasing; desktop traffic is stagnant and slightly decreasing.The problem is that mobile cost per click is only 33 percent of desktop traffic and declining.Mobile click through rate is as good desktop. I am getting as many clicks on mobile as desktop.Because of mobile CPC, as mobile traffic grows, I earn less money.Is anyone else facing this type of situation? And what are you doing about it?