Conversation so far:
When wasJessica Mauboy's debut released ?
Jessica Mauboy's debut studio album Been Waiting was released on 22 November 2008
How did Jessica Mauboy's debut studio album Been Waiting rank?
Jessica Mauboy's album Been Waiting peaked at number 11

Question: how many copies sold?
Self-contained rewrite: how many copies of Jessica Mauboy debut studio album Been Waiting sold having peaked at number 11?