02/03/2020: COVID-19 impact
                 The outbreak of the COVID-19 pandemic resulted in economic disruptions, affecting the Ukrainian Hryvnia and causing volatility in the currency markets.
                 01/10/2018: Introduction of New Coins
                 Botswana introduces a new series of coins, featuring updated designs and enhanced durability.
                 05/02/2015: Currency devaluation
                 Due to the economic crisis, the Ukrainian Hryvnia experienced a significant devaluation, leading to a sharp increase in prices and financial hardships.
                 01/08/2014: Currency Redenomination
                 Botswana redenominates the Pula, dividing it into 1000 Thebe to simplify calculations and reduce the use of smaller denominations.
                 20/02/2014: Ukrainian revolution
                 The Ukrainian revolution began, leading to political instability and economic challenges, impacting the value and stability of the Ukrainian Hryvnia.
                 05/10/2009: Introduction of New Banknotes
                 Botswana introduces a new series of banknotes, featuring improved security features and updated designs.
                 01/07/2008: Exchange rate flexibility
                 Ukraine implemented a flexible exchange rate system, allowing the Ukrainian Hryvnia to fluctuate based on market forces rather than being pegged to a fixed rate.
                 23/08/2005: Currency Devaluation
                 Botswana allows the Pula to float freely against other currencies, resulting in a devaluation of approximately 12%.
                 01/10/2004: Banknote redesign
                 New banknotes of the Ukrainian Hryvnia were issued with enhanced security features and updated designs, aimed at combating counterfeiting.
                 02/09/1996: Currency reform
                 A currency reform was conducted, introducing new banknotes and coins of the Ukrainian Hryvnia, addressing issues of inflation and stabilization.
                 02/09/1992: Introduction of the Ukrainian Hryvnia
                 The Ukrainian Hryvnia (UAH) was introduced as the national currency, replacing the Soviet ruble, marking Ukraine's economic independence.
                 31/12/1980: Currency Board Established
                 The Bank of Botswana establishes a Currency Board, which manages the issuance and distribution of the Pula.
                 17/10/1978: Currency Pegged to a Basket
                 Botswana pegs the Pula to a basket of currencies, including the South African Rand, British Pound, and US Dollar.
                 14/09/1976: Introduction of the Pula
                 Botswana replaces the South African Rand with its own currency, the Pula, at a 1:1 exchange rate.