As reported by ComputerWorld, Apple hit 14% share of the US computer market in February 2008, up from 9% in February 2007.

In part this growth was fuelled by the mid-month introduction of the MacBook Air, which accounted for ~20% of Apple's notebook sales. Year over year, Apple sales grew by 60%, compared to the industry as a whole's 9%. Is that type of growth sustainable?

This proposition will pay out S$100 if Apple collects 18% (or higher) share in the US computer market in any month in 2008.

Whatever method is being cited from NPD Group is what should be used when judging this prediction.