strengthening to today’s official level of 26.86. To prevent the hryvnia from overvaluing, the central bank has bought $2 billion from the population this year, Bohdan Danylyshyn, chairman of the National Bank of Ukraine Council, writes on Facebook. Bolstered by high prices for Ukraine’s major exports, the hryvnia has gained 5% against the dollar this year. Reserves are about $29 billion.