2011: By the Numbers
From "Harry Potter"'s gross to Lady Gaga's followers, the year as told in data.
Dec. 16, 2011— -- 
$1.3 billion: Ticket sales of the top-grossing film of 2011, "Harry Potter and the Deathly Hallows Part 2."
Over 150: Words added to 2011 edition of "Merriam-Webster Collegiate Dictionary." They include "bromance," "crowdsourcing" and "tweet."
10: Percentage of all status updates in English that mentioned Osama Bin Laden's death on May 1, the day the news broke, making it number 1 on Facebook's list of Top 10 Global Topics of 2011.
17 million: Number of followers Lady Gaga has on Twitter, making her the site's most followed.
379,000: Copies of "Steve Jobs," by Walter Isaacson, sold during its first week, according to BookScan. Amazon.com recently announced it is the bookseller's top-selling book of 2011.
5 million: Number of units sold of Adele's "21," the top-selling CD of 2011.
115: Age of Bessie Cooper, of Monroe, Ga., the oldest person in the world.
445: Number of U.S. military deaths in 2011 (to date).
20 million: Number of downoads of Tap Zoo, the top-grossing app of 2011.
Watch "The Year With Katie Couric" now and click here for more on "The Year" from People magazine.