doctor who - How many Daleks are left?

The Skittles breed of Dalek were pretty limited in number. One by one we've seen a couple meet their end, if memory serves.

Which Power Ranger Daleks are still* kicking about the Universe?

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^{* Well, OK; "still" is a fluid concept. We jump around in space and time, and so do the Daleks, so we could say that — depending when we materialise — they're all alive, all the time (which, incidentally, is something that really bothers me about the Doctor deciding to fake his death). But we the viewers still magically seem to have a linear, progressing view .. so let's think in terms of televised adventures. :)}