HTTPS has a strong correlation with page one Google results

Source: Backlinko, 2016

Key Takeaway:

We’ve heard for a couple of years now the importance of having a secured website, aka a web URL that begins with https as opposed to just http. According to Backlinko, there is a measurable correlation between having a “green padlock” site and not having a secured site. It’s relatively inexpensive to get HTTPS status and it helps you rank better, so do it!