Jay-Z, Diddy and Kanye West topped Forbes’s annual list of hip-hop’s top earners. Dubbed Hip-Hop Cash Kings, the list, which was announced today, names the top 20 most financially successful rap artists over the last year, beginning in June 2008. In turbulent times stability often constitutes success–and that’s the case in hip-hop this year. The top 20 earners on this year’s Cash Kings list racked up $300 million in earnings, the same as last year, despite a troubled world economy and a music industry thrown into flux by new technology. Artists like Jay-Z, Diddy, Ludacris and Snoop Dogg have thrived, adapting to the new world order by diversifying their revenue streams beyond recorded music.