The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Its data, published by Billboard magazine and compiled by Nielsen SoundScan, is based collectively on each single’s weekly physical and digital sales, as well as airplay and streaming. At the end of a year, Billboard will publish an annual list of the 100 most successful songs throughout that year on the Hot 100 chart based on the information. For 2016, the list was published on December 8, calculated with data from December 5, 2015 to November 26, 2016. The 2016 list was dominated by Justin Bieber and Drake, who shared the top four spots, for the first time since 2009 the top four spots was dominated by Lady Gaga and The Black Eyed Peas.
For the first time in 10 years, the year-end number-one single was #1 for five weeks or fewer.