20/03/2020: Banned Old Notes
                 Bangladesh bans the circulation of old 1000 Taka notes to combat counterfeit currency and encourage the use of new security-enhanced banknotes.
                 01/07/2013: Exchange rate unification
                 North Korea unifies the official exchange rate and market rate, resulting in a significant depreciation of the won.
                 12/06/2011: Denomination Revamp
                 Bangladesh revalues its currency by dropping two zeros from the denominations, making 1000 Taka equal to 10 Taka.
                 30/11/2009: Currency revaluation
                 North Korean government announces a currency revaluation, replacing the old won notes at a ratio of 1 for 100.
                 01/07/2007: Introduction of Polymer Banknotes
                 Bangladesh introduces polymer banknotes for the first time, enhancing durability, security, and public acceptance of the Bangladeshi Taka.
                 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.
                 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.
                 02/03/1976: Introduction of Decimal System
                 Bangladesh transitions from the Indian Rupee-based monetary system to the decimal-based system, resulting in the issuance of new banknotes and coins.
                 15/08/1975: Assassination of Sheikh Mujibur Rahman
                 The assassination of Sheikh Mujibur Rahman, the founding father of Bangladesh and the advocate for the Bangladeshi Taka, creates political instability and economic challenges.
                 04/01/1972: Introduction of Bangladeshi Taka
                 The Bangladeshi Taka is introduced as the national currency replacing the Pakistani Rupee at par.
                 25/03/1971: Declaration of Independence
                 Bangladesh declares independence from Pakistan, leading to the establishment of the Bangladeshi Taka as the official currency.
                 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.