Well I see my analysis was plausible but completely erroneous. I apologize for the misinformation.
I just love a good Bosnian thread, don't you?
just feel the love...lol
nice link.
According to your link, that is not fact but an assertion of a famous British journalist H. Brailsford (a communist no less) based on his estimated that two-thirds of the population of Kosovo was Albanian and one-third Serbian.
A primary document (again from your source) from that period (not the estimation of a biased journalist who has an agenda) being the Map of Alfred Stead[, published in 1909, shows that similar numbers of Serbs and Albanians were living in the territory. That is 50-50.
German scholar Gustav Weigand's results listed on Wikipedia are not for all of Kosovo (Wikipedia's problem is that its facts can be biased and skewed).
Lastly, I hope demographics are never a basis for declaring secession if so bye-bye Southwest USA.