According to
statistics from Google , Unicode ahead of ASCII and has now become the most popular character encoding system on the Internet. As you can see on the graph, over the past two years, the number of sites on UTF-8 has increased dramatically, so that within just ten days in December, Unicode beat two previous leaders: ASCII and the Western European encoding 8859-1 / 1252 (this is the same ASCII with the addition of several characters).
Google experts point out that this is a completely natural process, although, according to them, it is surprising that the staggering speed with which the “revolution of encodings” occurred on the Internet.

Google is one of the main supporters of Unicode. After indexing any sites, they will recode them to UTF-8 for the sake of consistency of their index. By the way, the other day it was announced about the upgrade of the entire Google search base to the new
Unicode 5.1 format (the standard was officially introduced a month ago, it supports more than 100,000 characters).