Overall, the U.S. non-game PC software market at retail stores totaled $3.3 billion in 2007, a 15 percent increase over the $2.9 billion generated in 2006. The rise is even more notable, as sales had been essentially flat from 2000 through 2006.
But, a whole lot of that is due to Microsoft, largely because of Office, but also because of Vista's debut. According to NPD's Chris Swenson, 80 percent of the total growth in the market can be attributed to the release of those two products. Also of note, security software sales increased 55 percent compared with the prior year, Swenson said.