If you go to the BCN page, it shows breakdown by camera too. The Kiss/Rebel/500D/550D isn't selling as fast, but the D90 is. That's where the money and sales volume really lies; the low and mid-range cameras. The D90 is still a really good camera, and if you discard the video area, it's still a better camera than the 550D. I suppose the increased sales volume is due to the price reduction that took place sometime in the first half of the year.
Looking at the camera list, I'm amazed the D3000 is #5. It's a bit of a lackluster entry-level camera from Nikon. Also, the NEX-5 is at #12, despite it appearing quite late in 1H 2010. I think Sony might have some good sales volume with that one (at least in Asia).
Baka. Soku. Zan. - The justice behind the dysORDer.