I could put the results in running text, but I usually find that method a bit overwhelming and unclear. As such, I called upon my incredible skills of table-making in Excel to produce these wonderful tables:
As you can see, the company is doing very, very well, despite the economic crisis. While companies like Acer see much better unit sales growth in the computing business, the fact of the matter is that most of those sales are netbooks which do not have the fat margins Apple has on its machines. Another interesting note, not in the above tables, is that Apple has stated that 44% of its sales are outside of the US, meaning the US is still the primary base for the Cupertino company.
Also of interest is the article we ran earlier on the predictions by IDC and Gartner. There was a discrepancy between both of them when it came to Apple's figures in the US, but it seems like Gartner was closer with predicting a 2.5% sales increase for Apple in the US.