A bitcoin teller machine is seen in a restaurant in Lagos, Nigeria September 1, 2020. Picture taken September 1, 2020. REUTERS/Seun Sanni 

A bitcoin user buys bitcoins with naira on Bitcoin Teller Machine in Lagos, Nigeria September 1, 2020. Picture taken September 1, 2020. REUTERS/Seun Sanni 

Locals walk in front of Ahli United Bank, following an outbreak of coronavirus disease (COVID-19), in Manama, Bahrain, March 18, 2020. REUTERS/Hamad I Mohammed 

Locals walk in front of Bahrain Credit (a Bahraini financing company), following an outbreak of coronavirus disease (COVID-19), in Manama, Bahrain, March 18, 2020. REUTERS/Hamad I Mohammed 

A screen displays currency exchange rates outside Mexico's stock exchange building in Mexico City, Mexico March 12, 2020. REUTERS/Luisa Gonzalez 

The building of Mexico's Stock Exchange is pictured in Mexico City, Mexico March 12, 2020. REUTERS/Luisa Gonzalez 

A man walks outside the building of Mexico's stock exchange in Mexico City, Mexico March 12, 2020. REUTERS/Luisa Gonzalez 

The building of Mexico's Stock Exchange is pictured in Mexico City, Mexico March 12, 2020. REUTERS/Luisa Gonzalez 

The building of Mexico's Stock Exchange is pictured in Mexico City, Mexico March 12, 2020. REUTERS/Luisa Gonzalez 

A screen displays currency exchange rates outside Mexico's stock exchange building in Mexico City, Mexico March 12, 2020. REUTERS/Luisa Gonzalez 

A screen displays currency exchange rates outside Mexico's stock exchange building in Mexico City, Mexico March 12, 2020. REUTERS/Luisa Gonzalez 

The word dollar is pictured at a foreign exchange house in Mexico City, Mexico City, Mexico February 26, 2020. REUTERS/Edgard Garrido 

A board displays exchange rates for foreign currencies is pictured at a foreign exchange house in Mexico City, Mexico City, Mexico February 26, 2020. REUTERS/Edgard Garrido 

A board displays exchange rates for Mexican peso and U.S. dollar is pictured at a currency exchange shop in Mexico City, Mexico February 26, 2020. REUTERS/Edgard Garrido 

A man is reflected in an electronic display showing world markets indices and exchange rates of the Japanese yen against world currencies outside a brokerage in Tokyo, Japan, January 8, 2020. REUTERS/Issei Kato 

Men walk past an electronic display showing the Japanese yen's exchange rates against world currencies in Tokyo, Japan, January 8, 2020. REUTERS/Issei Kato 

Pedestrians walk along a deserted verandah where black market forex dealers operated before a currency market crackdown in Bujumbura, Burundi, October 17, 2019. REUTERS/Evrard Ngendakumana 

Motorists drive past the Peace Exchange forex bureau that was closed in a currency market crackdown in Bujumbura, Burundi, October 17, 2019. REUTERS/Evrard Ngendakumana 

Iranian rial currency notes are seen at a market in the holy Shi'ite city of Najaf, Iraq September 22, 2019. REUTERS/Alaa al-Marjani 

An employee of a foreign currency company works in front of a computer screen showing exchange rates between the Japanese yen and the U.S. dollar, at a dealing room in Tokyo, Japan, August 6, 2019. REUTERS/Issei Kato 

An employee of a foreign currency company pauses as he is seen between U.S. and Japanese national flags at a dealing room in Tokyo, Japan, August 6, 2019. REUTERS/Issei Kato 

An employee of a foreign currency company walks past in front of a graph showing recent movements of the exchange rates between the Japanese yen and the U.S. dollar at a dealing room in Tokyo, Japan, August 6, 2019. REUTERS/Issei Kato 

Passersby are reflected on an electronic board showing the exchange rates between the Japanese yen and the U.S. dollar, the yen against the euro, the yen against the Australian dollar, Dow Jones Industrial Average and other market indices outside a brokerage in Tokyo, Japan, August 6, 2019. REUTERS/Issei Kato 

A man sleeps near a display board of a currency exchange office in central Kiev, Ukraine August 2, 2019. REUTERS/Gleb Garanich 

A board displaying buying and selling rates is seen outside of a currency exchange outlet in London, Britain, July 31, 2019. REUTERS/Toby Melville 

A man walks past a currency exchange outlet in London, Britain, July 31, 2019. REUTERS/Toby Melville 

Boards displaying buying and selling rates are seen outside of currency exchange outlets in London, Britain, July 31, 2019. REUTERS/Toby Melville 

A man walks past a board displaying buying and selling rates outside of a currency exchange outlet in London, Britain, July 31, 2019. REUTERS/Toby Melville 

Pedestrians walk past a currency exchange outlet in London, Britain, July 31, 2019. REUTERS/Toby Melville 

People walk past a currency exchange outlet in London, Britain, July 31, 2019. REUTERS/Toby Melville 

A man walks past a currency exchange outlet in London, Britain, July 31, 2019. REUTERS/Toby Melville 

A woman stands next to a board displaying the exchange rate for Mexican Peso and U.S. Dollar, in Mexico City, Mexico July 9, 2019. REUTERS/Luis Cortes 

People walk past a board displaying the exchange rate for Mexican Peso and U.S. Dollar, in Mexico City, Mexico July 9, 2019. REUTERS/Luis Cortes 

People walk past a board displaying the exchange rate for Mexican Peso and U.S. Dollar, in Mexico City, Mexico July 9, 2019. REUTERS/Luis Cortes 

An employee changes the numbers on a board displaying the exchange rate for Mexican Peso and U.S. Dollar, in Mexico City, Mexico July 9, 2019. REUTERS/Luis Cortes 

A board displaying the exchange rate for Mexican Peso and U.S. Dollar is pictured at a BanRegio Bank branch in Mexico City, Mexico, June 10, 2019. REUTERS/Gustavo Graf 

A man walks by a board displaying the exchange rate for Mexican peso and U.S. dollar displayed at a BanRegio Bank branch in Mexico City, Mexico, June 10, 2019. REUTERS/Gustavo Graf 

A woman sweeps next to a board displaying the exchange rate for Mexican peso and U.S. dollar at a foreign exchange house in Mexico City, Mexico, June 10, 2019. REUTERS/Gustavo Graf 

A board displaying the exchange rate for Mexican Peso and U.S. Dollar is pictured at a BanRegio Bank branch in Mexico City, Mexico, June 10, 2019. REUTERS/Gustavo Graf 

A board displaying the exchange rate for Mexican Peso and U.S. Dollar is pictured at a CI Bank branch in Mexico City, Mexico, June 4, 2019. REUTERS/Gustavo Graf 

A man walks by a board displaying the exchange rate for Mexican Peso and U.S. Dollar at a CI Bank branch in Mexico City, Mexico, June 4, 2019. REUTERS/Gustavo Graf 

A man is reflected on a board that shows the exchange rate for Mexican Peso and U.S. Dollar at a CI Bank branch in Mexico City, Mexico May 31, 2019. REUTERS/Carlos Jasso 

A board displaying the exchange rate for Mexican Peso and U.S. Dollar is pictured at a Mifel Bank branch in Mexico City, Mexico May 31, 2019. REUTERS/Carlos Jasso 

A woman walks by a board with the exchange rate for Mexican Peso and U.S. Dollar at a CI Bank branch in Mexico City, Mexico, May 31, 2019. REUTERS/Carlos Jasso 

An employee changes the board with the exchange rate for Mexican Peso and U.S. Dollar at a CI Bank branch in Mexico City, Mexico May 31, 2019. REUTERS/Carlos Jasso 

An employee changes the board with the exchange rate for Mexican Peso and U.S. Dollar at a CI Bank branch in Mexico City, Mexico May 31, 2019. REUTERS/Carlos Jasso 

A U.S. dollar banknote featuring American founding father Benjamin Franklin and a China's yuan banknote featuring late Chinese chairman Mao Zedong are seen among U.S. and Chinese flags in this illustration picture taken May 20, 2019. Picture taken May 20, 2019. REUTERS/Jason Lee/Illustration 

A U.S. dollar banknote featuring American founding father Benjamin Franklin and a China's yuan banknote featuring late Chinese chairman Mao Zedong are seen among U.S. and Chinese flags in this illustration picture taken May 20, 2019. Picture taken May 20, 2019. REUTERS/Jason Lee/Illustration 

U.S. and Chinese flags are seen in front of a U.S. dollar banknote featuring American founding father Benjamin Franklin and a China's yuan banknote featuring late Chinese chairman Mao Zedong in this illustration picture taken May 20, 2019. Picture taken May 20, 2019. REUTERS/Jason Lee/Illustration 

A woman looks at an electronic board showing the recent fluctuations of market indices on the floor of Brazil's B3 Stock Exchange in Sao Paulo, Brazil, April 3, 2019. Picture taken April 3, 2019. REUTERS/Amanda Perobelli 

A woman takes a picture of an electronic board showing the recent fluctuations of market indices on the floor of Brazil's B3 Stock Exchange in Sao Paulo, Brazil, April 3, 2019. Picture taken April 3, 2019. REUTERS/Amanda Perobelli 

A woman takes a picture of an electronic board showing the recent fluctuations of market indices on the floor of Brazil's B3 Stock Exchange in Sao Paulo, Brazil, April 3, 2019. Picture taken April 3, 2019. REUTERS/Amanda Perobelli 

A woman looks at an electronic board showing the recent fluctuations of market indices on the floor of Brazil's B3 Stock Exchange in Sao Paulo, Brazil, April 3, 2019. Picture taken April 3, 2019. REUTERS/Amanda Perobelli 

A woman walks past an electronic board showing the Korea Composite Stock Price Index (KOSPI) at the Korea Exchange in Seoul, South Korea, March 25, 2019. REUTERS/Kim Hong-Ji 

A woman walks past an electronic board showing the Korea Composite Stock Price Index (KOSPI) at the Korea Exchange in Seoul, South Korea, March 25, 2019. REUTERS/Kim Hong-Ji 

A man takes photographs of an electronic board showing the Korea Composite Stock Price Index (KOSPI) at the Korea Exchange in Seoul, South Korea, March 25, 2019. REUTERS/Kim Hong-Ji 

A man walks past an electronic board showing the Korea Composite Stock Price Index (KOSPI) at the Korea Exchange in Seoul, South Korea, March 25, 2019. REUTERS/Kim Hong-Ji 

A screen board displaying the exchange rate for Mexican peso and U.S. dollar is seen at a CIBanco bank branch in Mexico City, Mexico February 28, 2019. REUTERS/Daniel Becerril 

A board displaying the exchange rate for Mexican peso and U.S. dollar is pictured at a foreign exchange house in Mexico City, Mexico February 28, 2019. REUTERS/Daniel Becerril 

People walk next to a board displaying the exchange rate for Mexican peso and U.S. dollar at a foreign exchange house in Mexico City, Mexico February 28, 2019. REUTERS/Daniel Becerril