The HTTP Archive released the 2020 version of their Web Almanac based on data from 7.5 million websites.
Our mission is to combine the raw stats and trends of the HTTP Archive with the expertise of the web community. The Web Almanac is a comprehensive report on the state of the web, backed by real data and trusted web experts. It is comprised of 22 chapters spanning aspects of page content, user experience, publishing, and distribution.
If you’re in to web performance, they have sections on both Performance and Page Weight