Kendrick Lamar breaks two records on Billboard's rap charts with 'GNX' and 'Luther' as the longest-leading No. 1s on their respective charts.

The surprise track, released on July 5, storms onto the Hot R&B/Hip-Hop Songs chart dated July 19 to give the superstar his record-extending 31st champ. By adding to his chart-topping collection, ...

Here are the No. 1 rap songs of every year since 1989. Billboard reviews the chart's No. 1 year-end titles for every year of the chart's existence.

To recap the chart’s 35th anniversary, Billboard looks at the best of the best – the No. 1 year-end titles on the Hot Rap Songs chart for its entire existence.