Looking back at the biggest hit singles of every year, dating to the Hot 100's 1958 launch. By Xander Zellner Billboard has been publishing weekly rankings in one form or another for over a century.

THE WEEK’S MOST POPULAR CURRENT SONGS ACROSS ALL GENRES, RANKED BY STREAMING ACTIVITY FROM DIGITAL MUSIC SOURCES TRACKED BY LUMINATE, RADIO AIRPLAY AUDIENCE IMPRESSIONS AS MEASURED BY LUMINATE ...

The Billboard Hot 100 singles chart measures the most popular songs every week from Friday to Thursday based on the combination of their sales, online streams (audio and video), and radio airplay.

Plus, Wham!’s “Last Christmas” leaps 18-3, as the 1984 single hits a new Hot 100 high. via: Billboard ...