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.

By Xander Zellner Debuting a song on the Billboard Hot 100 is a highlight of any musician ... He scored his 100th (of an eventual 109 total) in May 1975 with “T-R-O-U-B-L-E.” ...