Battery-powered portable computers had just 2% worldwide market share in 1986.[66] However, laptops have become increasingly popular, both for business and personal use.[67] Around 109 million notebook PCs shipped worldwide in 2007, a growth of 33% compared to 2006[68]. In 2008 it was estimated that 145.9 million notebooks were sold, and that the number would grow in 2009 to 177.7 million.[69] The third quarter of 2008 was the first time when notebook PC shipments exceededdesktops, with 38.6 million units versus 38.5 million units.[67][70][71][72]For Microsoft Windows systems, the average selling price (ASP) showed a decline in 2008/2009, possibly due to low-cost netbooks, drawing US$689 at U.S. retail in August 2008. In 2009, ASP had further fallen to $602 by January and to $560 in February. While Windows machines fell $129 in these seven months, Mac laptop ASP declined just $12 from $1,524 to $1,512.[73]
