Amazon's Prime Day, by the Numbers

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On Prime Day and Amazon’s 20th birthday, here are some numbers about the company. Rick Wilkin/Reuters

Updated | It’s Prime Day—Amazon’s 20th birthday, which the e-commerce giant has chosen to celebrate with a 24-hour sale-a-thon. In honor of the momentous day, here are some standout numbers about the company and the day itself.

35,000: Number of Lord of the Rings Blu-Ray sets Amazon Prime customers bought in 15 minutes

1 minute: Amount of time it took for a Kate Spade purse to sell out

1,200: Number of $999 TVs that sold out in less than 10 minutes 

10 minutes: Time Amazon waits before announcing a new Prime Day deal

44 million: Current number of Amazon Prime members

47 percent: Portion U.S. Amazon shoppers who are Prime members

$99: Annual price of a Prime membership

$1,200: Average amount Prime members spend a year on Amazon

$700: Average amount non-Prime members spend a year on Amazon

$239,045: How much a $1,000 investment in Amazon in 1997 would be worth today

522 percent: How much Amazon stock has gone up in the past five years