Photo from UNIAN The National Bank of Ukraine (NBU) on January 31 set the official forex rate for Friday, January 31, at UAH 24.92 to the U.S. dollar, which let the country&#39;s national currency weaken by seven kopiykas. Read alsoHryvnia sliding after rapid growth: NBU names reasons The hryvnia has been falling against the dollar for the fourth day in a row after it weakened by 27 kopiykas on Tuesday, by 12 kopiykas on Wednesday, and by 13 kopiykas on Thursday, according to the NBU website. The official forex rate against the euro for Friday is fixed at UAH 27.48 per euro – the hryvnia lost 15 kopiykas in value since Thursday. As UNIAN reported earlier, Ukraine&#39;s national currency in 2019 strengthened against the U.S. dollar by 14.5%, to UAH 23.69 and against the euro by 16.7%, to UAH 26.42. Ukraine&#39;s national currency in 2018 strengthened against the U.S. dollar by 1.4%, to UAH 27.69 as of January 1, 2019. The hryvnia&#39;s historical low against the U.S. dollar was registered at UAH 30.01 in February 2015.