
A A United States Postal Service (USPS) letter carrier delivers mail in Shelbyville, Kentucky, U.S., on Thursday, Dec. 22, 2016. More than 30 million packages handled by the USPS are estimated to be delivered on December 22, which is still a fraction of the 750 million packages this holiday season, a 12 percent increase over last year. Photographer: Luke Sharrett/Bloomberg via Getty Images