A public bank is a bank, a financial institution, in which a state, municipality, or public actors are the owners. It is an enterprise under government control. Prominent among current public banking models are the Bank of North Dakota, the Sparkassen-Finanzgruppe in Germany, and many nations’ postal bank systems. Public or 'state-owned' banks proliferated globally in the late 19th and early 20th centuries as vital agents of industrialisation in capitalist and socialist countries alike; as late as 2012, state banks still owned and controlled up to 25 per cent of total global banking assets.