For a sixth straight week, 50 Cent's "The Massacre" manages to stay at the head of the pack and hold onto its place at No. 1 on The Billboard 200. Despite continually sliding sales, which fell 22% from the previous week to 165,000 copies in the United States, according to Nielsen SoundScan, it was enough to keep the Shady/Aftermath/Interscope title on top of the tally.