The Billboard Hot 100 is the music industry standard record chart in the United States for songs, published weekly by Billboard magazine. Chart rankings are based on sales (physical and digital), radio play, and online streaming in the United States.
https://en.m.wikipedia.org/wiki/Billboard_Hot_100
Billboard Year-End charts are a cumulative measure of a single or album’s performance in the United States, based upon the Billboard magazine charts during any given chart year. Billboard’s “chart year” runs from the first Billboard “week” of December to the final week in November, but because the Billboard week is dated in advance of publication, the last calendar week for which sales are counted is usually the third week in November. This altered calendar allows for Billboard to calculate year-end charts and release them in time for its final print issue in the last week of December.
https://en.m.wikipedia.org/wiki/Billboard_Year-End
Billboard Year-End Hot 100 singles of 2020
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2020
Billboard Year-End Hot 100 singles of 2019
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2019
Billboard Year-End Hot 100 singles of 2018
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2018
Billboard Year-End Hot 100 singles of 2017
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2017
Billboard Year-End Hot 100 singles of 2016
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2016
Billboard Year-End Hot 100 singles of 2015
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2015
Billboard Year-End Hot 100 singles of 2014
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2014
Billboard Year-End Hot 100 singles of 2013
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2013
Billboard Year-End Hot 100 singles of 2012
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2012
Billboard Year-End Hot 100 singles of 2011
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2011
Billboard Year-End Hot 100 singles of 2010
https://en.m.wikipedia.org/wiki/Billboard_Year-End_Hot_100_singles_of_2010