William Binney (former NSA employee turned critic/whistleblower) in 2013 said there were 3 billion phone calls per day in the US[1]. In 2010 Pew[2] said 82% of

William Binney (former NSA employee turned critic/whistleblower) in 2013 said there were 3 billion phone calls per day in the US[1]. In 2010 Pew[2] said 82% of adults made an average of 5 phone calls per day (~800 million calls), so 3 billion seems reasonable considering business calls, telemarketers, etc. 151 million in a year out of 365 * 3 billion is pretty small. 1. http://dailycaller.com/2013/06/10/what-do-they-know-about-you-an-interview-with-nsa-analyst-william-binney/ http://dailycaller.com/2013/06/10/what-do-they-know-about-yo... 2. http://www.pewinternet.org/2010/09/02/cell-phones-and-american-adults/#uses-of-the-phone-calling-and-texting http://www.pewinternet.org/2010/09/02/cell-phones-and-americ...