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ST. PETERSBURG, RUSSIA. JANUARY 21, 2016. A digital board displaying currency exchange rates outside an exchange office. Euro rises above 91 and US Dollar above 84 against Russian Ruble in the Moscow Exchange trading hours. Alexander Demianchuk/TASS (Photo by Alexander Demianchuk\TASS via Getty Images)

ST. PETERSBURG, RUSSIA. JANUARY 21, 2016. A digital board displaying currency exchange rates outside an exchange office. Euro rises above 91 and US Dollar above 84 against Russian Ruble in the Moscow Exchange trading hours. Alexander Demianchuk/TASS (Photo by Alexander Demianchuk\TASS via Getty Images)