The Statistical Office in Poznań presents the latest edition of the Statistical Yearbook of the Wielkopolskie Voivodship­ – one of the most important titles in the annual publication plan. This periodical summary of statistical information provides an insight into the scale of social changes and the level of economic development of the voivodship. This year’s edition is a quantitative summary of changes observed in various areas of the socio-economic sphere in 2015.