The Xbox 360 has been on the market just under eight years. The console launched in November 2005 and has since shipped 80 million units to retail, according to Microsoft in its latest NPD sales report. This is a huge improvement over the original Xbox which sold 24.65 million units.
"This month, Xbox 360 reached 80 million consoles sold to retailers worldwide and maintained its lead as the number one selling console in the U.S. in 2013."
September 2013 was also the biggest September software sales for the Xbox 360 as sales reached $401.2 million. The Xbox 360 has sold 1.6 million units in the US, remaining the "number one selling console in the U.S. in 2013."
Microsoft has also stated that pre-orders for the Xbox One is selling out faster than any other Xbox and it continues to outpace the Xbox 360 at the same time period.