Ilya Grigorik, the Google man obsessed with speed, mobile, and SSL has shared interesting stats about the adoption of HTTPS across top 300k websites.
He has revealed that the adoption of HTTPS for top 300k sites has increased by 300% (from 4% to 13%) in the past two years. In Chrome, the number of HTTPS navigations has also grown from 27% to 57% in the same period.
Here's the chart shared by Ilya:
However, Google's goal is to have HTTPS everywere.HTTPS Support Has Grown 300% in Past Two Years, Reveals Google!,