Ukraine's central bank says its foreign currency and gold reserves dropped to $6.4 billion in Jan. 2015. The conflict in the east with the flareup in Fe.b 2015 is taking its toll on the Ukrainian economy. The central bank raised interest rates and moved to a freely floating exchange rate in Feb 2015. The currency hryvnia lost half of its value in 2014. Ukraine's currency lost one fifth of its value on Feb. 5, 2015. FactSet figures show the decline was down to 25 hryvnia to the U.S. dollar.