The ARIA Albums Chart ranks the best-performing albums and extended plays (EPs) in Australia. Its data, published by the Australian Recording Industry Association, is based collectively on the weekly physical and digital sales of albums and EPs. In 2017, 24 albums claimed the top spot, including Michael Bublé's Christmas, and seven acts, The xx, Dune Rats, Busby Marou, The Waifs, Harry Styles, Paul Kelly and Gang of Youths, achieved their first number-one album in Australia.