In 1928, a stable currency, the ''kroon'', was established. It is issued by the Bank of Estonia, the country's central bank. The word ''kroon'' (, "crown") is related to that of the other Nordic currencies (such as the Swedish krona and the Danish and Norwegian krone). The kroon succeeded the mark in 1928 and was used until 1940. After Estonia regained its independence, the kroon was reintroduced in 1992.