Adele’s 25 has scored a sixth straight week on top of the US Billboard album chart, becoming the biggest selling album of 2015. According to Billboard the album sold another 363,000 units in the week ending Dec. 31, 2015, with 307,000 units coming from pure album sales.

Adele25 was 2015’s biggest selling album in the US.

By December 31st 25 had sold 7.44 million copies in the U.S., making it the year’s best-selling album and the biggest selling of any calendar year since 2004, when Usher’s Confessions sold 7.98 million copies.

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25 is also the first album to spend its first six weeks of release at number one since Susan Boyle’s I Dreamed a Dream topped the chart from December 12, 2009 through to January 16, 2010. In addition it has also become the first album to spent at least five weeks in a row at the number one spot since the Frozen soundtrack in early 2104.

But that’s not all, 25 is now the first album released since 2001 to sell more than 300,000 copies in each of its first six weeks on sale. The last album to do so was Creed’s Weathered, which sold 300,000-plus copies in each of its first six weeks, after being released on November 20th 2001.

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Over in the UK, 25 was also 2015’s biggest album, according to the Official Charts Company. The album has so far sold 2.496 million copies in the UK since it’s release six weeks ago. It also holds the title of the biggest number one album in UK chart history after it sold 800,307 copies in its first week of release.