On April 25th, it was reaffirmed by Google that 15 percent of all searches done on Google by users on a daily basis have never been seen before. Back in 2013, Google said this as well, and they’ve restated that metric as Google announced Project Owl this morning.
Google wrote:
There are trillions of searches on Google every year. In fact, 15 percent of searches we see every day are new — which means there’s always more work for us to do to present people with the best answers to their queries from a wide variety of legitimate sources. While our search results will never be perfect, we’re as committed as always to preserving your trust and to ensuring our products continue to be useful for everyone.
Google said last year that they are handling over 2 trillion searches every year. In the April 25th announcement, Google didn’t specify a particular number, but they said that “trillions” of searches are performed yearly on Google. Back in 2012, claimed that they had processed 1.2 trillion searches per year.
Google had said that 15 percent of their queries seen were brand new, but back in 2007, that figure was closer was closer to 20 to 25 percent.