'Fifty Shades Freed", the third installment of E.L. James erotic novel trilogy "Fifty Shades of Grey" bagged number one position in Amazon's List of Bestsellers of 2012.

E.L James' "Fifty Shades of Grey" trilogy has taken the book industry by storm. And now, the third installment of the trilogy "Fifty Shades Freed" has been named the top best seller of 2012 by online giant retailers Amazon.

The book has up to date, sold 60 million copies worldwide. Not just that, other books published by Random House like Gone Girl by Gillian Flynn, Wild by Cheryl Strayed and The Racketeer by John Grisham have also fared pretty well.

Gone Girl, a thriller novel by Gillian Flynn came in second and Bared to You: A Crossfire Novel by Sylvia Day followed a close fourth. The Fifty Shades Trilogy was placed third.

"This was truly the year of the billionaire bad boy in romance," said Sara Nelson, editorial director of books and Kindle at Amazon.com.

"While E.L. James published the first two books in her Fifty Shades trilogy in 2011, so they aren't eligible for our 2012 list, the series really took off this year and propelled the third installment and the omnibus edition onto our Top 10 list," she added in a statement.

The list, released by Amazon reads:

1.      Fifty Shades Freed: Book Three of the Fifty Shades Trilogy by E. L. James

2.      Gone Girl: A Novel by Gillian Flynn

3.      Fifty Shades Trilogy: Fifty Shades of Grey, Fifty Shades Darker, Fifty Shades Freed 3-volume set by E. L. James

4.      Bared to You: A Crossfire Novel by Sylvia Day

5.      No Easy Day: The Firsthand Account of the Mission That Killed Osama Bin Laden by Mark Owen

6.      The Marriage Bargain (Marriage to a Billionaire) by Jennifer Probst

7.      Reflected in You: A Crossfire Novel by Sylvia Day

8.      The Racketeer by John Grisham

9.      Defending Jacob: A Novel by William Landay

10.  The Innocent by David Baldacci