https://techcrunch.com/2018/01/02/amazon-shipped-over-5-billion-items-with-prime-in-2017/

Amazon still won’t officially reveal how many consumers worldwide participate in its Amazon Prime membership program, but it did today offer a few new stats related to that program’s adoption and growth. The company on Tuesday announced that more new, paid members joined Prime worldwide in 2017 than any other year. It also noted that over 5 billion items worldwide shipped with Prime in 2017, including via one-day and two-day shipping.

The company has never before released details around how many items it has shipped via Prime in a year’s time, and declined to provide last year’s figures for comparison purposes.