given in per milles (‰) and has been averaged per annum for 2017-2020. "Samorząd terytorialny w Polsce" [Local self-government in Poland]. Administracja...
voivodeship) by an act of Parliament; związek międzygminny, powiatów lub powiatowo-gminny (an inter-municipal union, a union of counties, or a municipal-county union)...