already in circulation. The 1, 2, 5 and 10 hryvnia banknotes will continue to be legal tender alongside its equivalent coins in general circulation, while being withdrawn from circulation from repeated use in commerce. In 2019, the National Bank of Ukraine introduced a revised 50 hryvnia banknote into circulation on 20 December 2019 and issued a revised 200 hryvnia banknote on 25 February 2020, thereby completing the family of notes which began with the issuance of the 100 hryvnia banknote in 2015. Current series Exchange rates Official NBU exchange rate at moment of introduction was UAH 1.76 per 1 US dollar. Following the Asian financial crisis in 1998, the currency was devalued to UAH 5.6 = USD 1.00 in February 2000. Later, the exchange rate remained relatively stable at around 5.4 hryvnias for 1 US dollar and was fixed to 5.05 hryvnias for 1 US dollar from 21 April 2005 until 21 May 2008. In mid-October 2008 rapid devaluation began, in the course of a global financial crisis that hit Ukraine hard, with the hryvnia dropping 38.4% from UAH 4.85 for 1 US dollar on 23 September 2008 to UAH 7.88 for 1 US dollar on 19 December 2008. After a period of instability, a new peg of 8 hryvnias per US dollar was established, remaining for several years. In 2012, the peg was changed to a managed float (much like that of the Chinese yuan) as the euro and other European countries' currencies weakened against the dollar due to the European debt crisis, and the value in mid-2012 was about ₴8.14 per dollar. As from 7 February 2014, following political instability in Ukraine, the National Bank of Ukraine changed the hryvnia into a fluctuating/floating currency in an attempt to meet IMF requirements and to try to enforce a stable price for the currency in the Forex market. In 2014 and 2015 the hryvnia lost about 70% of its value against the U.S. dollar, with the currency reaching a record low of ₴33 per dollar in February 2015. On 31 July 2019, the hryvnia to U.S. dollar exchange rate in the interbank foreign exchange market strengthened to ₴24.98 — the highest level in 3 years. Following the 2022 Russian invasion of Ukraine, the official exchange rate of hryvnia was fixed at ₴29.25 per 1 US dollar and ₴33.17 per 1 Euro. On July 21, 2022, it was devalued to ₴36.92