Infinity on High with a 54% decline during a post-Grammy week. The album rose to number three in its third week with 79,000 units sold. In its fourth week, the disc slipped to number four and sold 67,000 copies. "Infinity on High"s sales again fell in its fifth week, moving 58,000 copies and descending to number eight on the chart. In its sixth and last week in the top ten it fell to number nine and sold 43,000 copies. In April 2007, the album was certified Platinum by the Recording Industry Association of America (RIAA), denoting the shipment of one million copies. It
Infinity on High ten. In its 31st chart week it broke into the top ten again where it remained for another six weeks in a row, accumulating a total of thirteen weeks in the top ten. The CD was certified Double Platinum by the Australian Recording Industry Association (ARIA), denoting shipments of 140,000 copies. "Infinity on High" debuted at number one in New Zealand, and remained at the top position for six consecutive weeks, logging a total of thirty-seven chart weeks, making it the fifth longest chart sitter on the New Zealand charts in 2007. After marking its first twelve weeks in the