How many nevermind copys sold in 1991?

In 1991, Nirvana's album "Nevermind" sold approximately 6 million copies in the United States alone. The album's popularity surged significantly after the release of the single "Smells Like Teen Spirit," which contributed to its massive sales. By the end of 1991, "Nevermind" had established itself as a defining album of the grunge movement and a landmark in Rock Music history.