Between 1989 and 1999, 173 singles topped the Hot Rap Singles chart. Hot Rap Songs is a record chart published by the music industry magazine Billboard which ranks the most popular hip hop songs in the United States. With hip hop having greatly increased in mainstream popularity in the late 1980s, Billboard introduced the chart in their issue of March 11, 1989, under the name Hot Rap Singles. The inaugural number-one single on Hot Rap Singles was "Self Destruction" by the Stop the Violence Movement. From its 1989 inception until 2001, the chart was based solely on each single's weekly sales. "Hot Boyz", by Missy Elliott and featuring Nas, Eve and Q-Tip, was the final number-one single of the 1990s. The single's 18-week reign at the top spot extended into the next decade, and it holds the record for the most weeks at number one in the chart's history. LL Cool J (pictured) and Puff Daddy each attained nine number-one hits on the Hot Rap Singles chart during its first 11 years, the most for any artist during this period. (Full list...)