25/02/2020: Introduction of New Large Denomination Banknotes
                 Uzbekistan introduced new 100,000 and 200,000 som banknotes to meet the requirements of the growing economy and reduce cash circulation.
                 08/02/2019: Exchange Rate Unification
                 Uzbekistan unified the official and black-market exchange rates, allowing for more transparency in currency transactions.
                 03/09/2018: Denomination of Uzbekistani Som
                 Uzbekistan announced a 1:10,000 denomination of the som, as part of ongoing currency reform.
                 05/09/2017: Floating Exchange Rate Regime
                 Uzbekistan transitioned to a floating exchange rate regime, allowing the Uzbekistani Som's value to be determined by market forces.
                 01/07/2013: Exchange rate unification
                 North Korea unifies the official exchange rate and market rate, resulting in a significant depreciation of the won.
                 30/11/2009: Currency revaluation
                 North Korean government announces a currency revaluation, replacing the old won notes at a ratio of 1 for 100.
                 01/12/2001: Currency redenomination
                 North Korean won is redenominated, with the previous notes and coins being replaced by new ones at a ratio of 1 for 1,000.
                 10/03/2001: Introduction of New Uzbekistani Som
                 Uzbekistan introduced a new som, with 1 new som equaling 1,000 old soms, as a result of currency reform.
                 01/07/1994: Redenomination of Uzbekistani Som
                 Uzbekistan redenominated its currency, with 1 new som replacing 1,000 old soms to combat hyperinflation.
                 01/07/1993: Introduction of Uzbekistani Som
                 Uzbekistani Som (UZS) was introduced as the official currency of Uzbekistan after the country gained independence from the Soviet Union.
                 25/02/1992: Introducing foreign exchange certificates
                 North Korea introduces foreign exchange certificates to counter hyperinflation and stabilize its economy.
                 06/12/1979: Second major revaluation
                 North Korean won undergoes its second major revaluation, with the exchange rate being set at 1 for 10.
                 31/12/1959: First major revaluation
                 North Korean won undergoes its first major revaluation, with the exchange rate being set at 1 for 100.
                 06/12/1947: Introduction of North Korean won
                 North Korean won is introduced as the official currency of North Korea, replacing the Korean yen at par value.