sum banknotes, utilizing the design templates of the 2,000 and 20,000 sum banknotes. In that same year, the Central Bank of the Republic of Uzbekistan issued new 50,000 and 100,000 sum banknotes as part of a new series of banknotes first introduced with the 2,000 and 20,000 sum banknotes. An entirely new 200,000 sum banknote was issued on 15 July 2022. Exchange rates At its introduction on 1 July 1994, 1 US dollar was equal to 25 sum. 2017 reform On 2 September 2017, President of Uzbekistan Shavkat Mirziyoyev issued a decree "On priority measures of liberalizing foreign exchange policy". The reform took effect on 5 September 2017. The currency was untethered from its US dollar peg and started to float. As a result the sum's exchange rate to the US dollar increased from 4,210 Uzbek sum to 8,100 Uzbek sum. The new rate was even weaker than the sum's black-market convertibility of about 7,700 to the dollar. Restrictions on the amount of foreign currencies individuals and companies could buy were also abolished on the same day. See also Economy of Uzbekistan Kyrgyzstani som For earlier currencies used in Uzbekistan, see Bukharan tenga, Kokand tenga and Khwarazmi tenga Notes References External links Economy of Uzbekistan Currencies introduced in 1993 Currencies introduced in 1994