Ok, so ignore my last jam and the related figures (which were now quite obviously wrong). Thanks to @flaneur and @ndreasa for noticing :-), I have downloaded fresh copies of the data dumps and will go away and come back another time with fresh, accurate figures. Bear with me people, my expertise is music stuff not techy stuff (that's my excuse, and I'm sticking to it). For what it's worth, I'm willing to bet that the top 10 (11, ahem) is correct, just not the actual figures, so...
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