http://www.vintagevinylnews.com/2014/01/the-state-of-music-industry-2013.html

Rap - 8.7% (up 2.2%)
Electronic - 3.0% (down 0.3%)

R&B/Hip Hop - 18.6% (down 6.2%)
Dance/Electronic - 4.6% (up 8.4%)