Who gets the most traffic: Google, Bing or Yahoo ?

A couple of headlines from other websites:

Google Fails to Gain Search Market Share, Bing Steals From Yahoo

Danny Goodwin, November 14, 2013

Google Dwarfs Bing & Yahoo As Traffic Source For Major News Sites

Matt McGee Aug 27, 2013

When it comes to my sites, it appears to be Google, as this twelve month report shows:

By percentage:

The BBC shows up nicely with 2,882 referrals, British Expats and Facebook are low with 248 and 239 respectively.

Comscore rated the Search Engine Wars in Oct 2013 as

66.9% Google
18.1% Microsoft Bing
11.1% Yahoo!