17 to be correct, do your research.
11million 4million 2million
By the IFPI 2012
Just read the IFBI report again.
It's most about Adele and her 18,000,000 sales of 21 for 2011, also says about 2009 sales by SuBo and Adele sold more than all of SuBo's albums added together with one album. It breaks it down from