Laptop Thoughts: Notebook Market Stagnating - Except for Apple

"The iPad has hit the notebook PC market hard. A market that was growing 20% to 40% year-over-year per quarter just a couple of years ago is now basically flat."

These statistics show that notebook growth (or at least units shipped) has been declining since early 2010. Adding-in Apple's shipments for a few quarters shows that they are bucking the downward trend. Are tablets really causing notebook sales to crash? It would seem so. Except for Apple, even though five quarters of data is not overly significant. I would like to see a companion chart showing sales in units, not percentage, as reporting a large percentage growth, but a small number of units sold, is less significant. It would be interesting to see the comparable desktop statistics starting in 2008.