Ukraine's foreign exchange reserves increased by 5.8 billion U.S. dollars, or up 77 percent, to 13.3 billion U.S. dollars in 2015, the country's central bank Governor Valeria Gontareva said here on Tuesday.

"We have managed to increase reserves without creating an imbalance in the foreign exchange market," Gontareva told reporters during a conference.

She said that the growth in the reserves was achieved as the government has received 6.7 billion dollars in loans from the International Monetary Fund and bought some 1.6 billion dollars in the interbank currency market.

The rise was partially offset by using the reserves for serving Ukraine's foreign debt and carrying out market interventions to support local currency.

Last year, the crisis-hit Ukraine lost two thirds of its foreign exchange reserves. As of Jan. 1, 2015, the figure stood at 7.5 billion dollars, the lowest level in more than a decade.