Bloomberg provided March 2007 marketshare numbers from the NPD Group.
It revealed that for March 2007, Apple was ranked 4th for notebook sales (9.9%), 5th for Desktop sales (7.7%), and #1 for MP3 Player Sales (68.9%).
BetaNews provides a historical perspective on these numbers.
Apple's 9.9% marketshare brings Apple back into the top 5 notebook retailers after it had dropped out in February. Apple's notebook marketshare had been as high as 10.1%, however, in January of this year. The 7.7% Desktop marketshare, however, does represent the first time Apple has placed in the top 5 desktop retailers.
The MP3 marketshare, however, was a decline for Apple, who lost marketshare to SanDisk and Creative.
Note: figures are for "brick and mortar" retail sales only and do not include direct sales, sales from Wal-Mart or warehouse clubs.