REUTERS The National Bank of Ukraine (NBU) on Friday evening weakened the official hryvnia exchange rate by 11 kopiykas for Monday, Friday 3, bringing the national currency to UAH 25.03 to the U.S. dollar. Read alsoNBU over week spends over $143 mln on maintaining hryvnia rate The hryvnia has been falling against the dollar for the fifth day in a row after it weakened by 27 kopiykas on Tuesday, by 12 kopiykas on Wednesday, by 13 kopiykas on Thursday, and by seven kopiykas on Friday, according to the NBU website. The official forex rate against the euro for Monday is fixed at UAH 27.66 per euro, which is 18 kopiykas down from the rate set for Friday. 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.