Michael Jackson’s “Thriller” is still scaring up sales and giving the King of Pop’s legacy a new milestone. The album has sold 30 million copies in the United States, making Jackson the first artist to attain 30-time multiplatinum status, the Recording Industry Association of America and Jackson’s estate announced Wednesday. The album has proved even more popular overseas, with a total of 100 million copies sold worldwide since its 1982 release. “‘Thriller’ continues to be the yardstick against which all other albums are measured,” said John Branca, co-executor of Jackson’s estate. “He didn’t want to sell records to blacks or whites or Americans,” Branca said. “He wanted to sell records to everyone, Africa, Asia, everywhere. It’s just continued to sell and sell and sell.”