Statistics about “Microformat vs HTML+RDFa” adoption

Question

Are there some recent and reliable statistics about "Web use" (webpages using one standard or another) of these standards?

Or an specific s

Answer 1

The last statistics from the WebDataCommons as follows:

Source: http://webdatacommons.org/structureddata/2016-10/stats/stats.html

Number of domain parsed: 34 million pay-level-domains
Number of domains with RDFa, Microdata and Microformats: 5.63 million (16.5%)

Popularity of different formats: