Billboard R&B Number-One Albums, 2005 onwards Quiz

Every album to finish a year at number one on Billboard's R&B/hip-hop year-end chart between 2005 to the present: 20 rows, one per year, taken from the same published table as the complete run. This is the era cut, for when the full set from 1966 is more than you want in one sitting. Name each from its year, with the artist and the title's first letter available on the easier settings, or sort a selection into the order they led the chart. Parsed verbatim from the published year-end table; no answer is named here.