If you were born on Tuesday, February 10, 2009 then Thrift Shop by Macklemore & Ryan Lewis featuring Wanz was the number one on your 4th birthday, and went to number one on January 27, 2013. Check the price of Thrift Shop by Macklemore & Ryan Lewis featuring Wanz on Amazon.com
The biggest selling book of 2013 (the year you turned 4) was Gone Girl by Gillian Flynn.