Mac OS X Lion’s release has helped Apple grow its share of the PC install base to nearly 13.5% in the U.S. and more than 6% worldwide, according to new statistics from NetMarketShare, as reported by “AppleInsider” (

Mac OS X has been steadily climbing the global charts, seeing its market share rise from 5.60% in May to 5.67% and 5.96%, in June and July, respectively. At the end of August, it had reached 6.03% worldwide and 13.42% in the U.S. A day after its release, Apple said Lion sales had topped one million, making it the most successful operating system launch in its history.