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In page Pashtunistan:

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Depending on the source, the ethnic Pashtuns constitute 42-60% of the population of Afghanistan.[2][3][4][5][6][7] In neighboring Pakistan they constitute 15.42 percent of the 200 million population, which does not include Pashtun diaspora in other Pakistani cities and provinces.[citation needed] In the Khyber Pakhtunkhwa Province of Pakistan, Pashto speakers constitute above 73 percent of the population as of 1998.[8]