This is a database of all of Janet's chart and sales data - both domestic (US) and worldwide.   As one of the most successful artists in history, Janet has amassed a huge catalogue of hits and chart records.  Was When I Think Of You a #1 hit?  Exactly how many copies has Design Of A Decade sold?  It's all here, along with trivia tidbits.  Notes: - Before late 1998, a single was ineligible for select charts in the US without a commercial release.  We note these singles by release.  In the UK, a single has always required a commercial release in order to chart. - Until 1988, RIAA (US) certification for a Gold single was was 1 million units and a Platinum single was 2 million units.  As of January 1, 1989, the certification for Gold was changed to 500,000 and Platinum changed to 1 million.  These standards are not global - certifications from other countries may reflect a different number of units sold or shipped. If you would like to submit or correct information, please Contact Us.  We are happy to post any information, be it chart positions, full chart runs, weeks at #1, release dates, certifications, etc. Click one of the links to explore the data currently listed by era or project.