Photo from UNIAN The National Bank of Ukraine (NBU) on February 3 set the official forex rate for Tuesday, February 4, at UAH 25.08 to the U.S. dollar, which let the country&#39;s national currency weaken by five kopiykas. The hryvnia is falling against the dollar for the sixth day in a row&nbsp;after it weakened by 27 kopiykas on Monday, January 27, according to the NBU website. The official forex rate against the euro for Tuesday is fixed at UAH 27.75 per euro &ndash; the hryvnia lost nine kopiykas in value since Monday. Read alsoUkraine&#39;s central bank waiting for Naftogaz to sell Gazprom&#39;s US$3 bln on interbank market As UNIAN reported earlier, the Ukrainian hryvnia in January&nbsp;weakened by 5.7% against the U.S. dollar, to UAH 25.03, and by 4.7% against the euro, to UAH 27.66 per euro. 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. The hryvnia&#39;s historical low against the U.S. dollar was registered at UAH 30.01 in February 2015.