A woman wearing a plastic glove holds money as she stands in a queue to buy face masks at a post office, after a shortage of masks amid the rise in confirmed cases of the novel coronavirus disease COVID-19, in Daegu, South Korea, March 4, 2020. REUTERS/Kim Kyung-Hoon 

Bundles of Yemeni Riyal banknotes are pictured at the Central Bank of Yemen in Sanaa January 7, 2020. Picture taken January 7, 2020. REUTERS/Khaled Abdullah 

Employees count bundles of newly issued Yemeni Riyal bank notes at the Central Bank of Yemen in Sanaa January 7, 2020. Picture taken January 7, 2020. REUTERS/Khaled Abdullah 

An employee checks a bundle of Yemeni Riyal at the Central Bank of Yemen in Sanaa January 7, 2020. Picture taken January 7, 2020. REUTERS/Khaled Abdullah 

Bundles of Yemeni Riyal banknotes are pictured at the Central Bank of Yemen in Sanaa January 7, 2020. Picture taken January 7, 2020. REUTERS/Khaled Abdullah 

Bundles of newly issued Yemeni Riyal bank notes are pictured at the Central Bank of Yemen in Sanaa, Yemen January 7, 2020. Picture taken January 7, 2020. REUTERS/Khaled Abdullah 

A 2.4 kg chicken is pictured next to 14,600,000 bolivars, its price and the equivalent of 2.22 USD, at a mini-market in Caracas, Venezuela August 16, 2018. It was the going price at an informal market in the low-income neighbourhood of Catia. REUTERS/Carlos Garcia Rawlins SEARCH "POY GLOBAL" FOR FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2018 PACKAGES. TPX IMAGES OF THE DAY. 

A 2.4 kg chicken is pictured next to 14,600,000 bolivars, its price and the equivalent of 2.22 USD, at a mini-market in Caracas, Venezuela August 16, 2018. It was the going price at an informal market in the low-income neighborhood of Catia. REUTERS/Carlos Garcia Rawlins SEARCH "GARCIA ECONOMY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

A man withdraws money from an ATM machine in Buenos Aires, Argentina September 7, 2017. REUTERS/Marcos Brindicci 

Bank of Canada Governor Stephen Poloz speaks during a ceremony with Finance Minister Bill Morneau at the Museum of History announcing Viola Desmond has been chosen to be featured on a new $10 bank note, in Gatineau, Quebec, Canada, December 8, 2016. REUTERS/Chris Wattie 

Canada's Finance Minister Bill Morneau stands with Wanda Robson after her sister Viola Desmond was chosen to be featured on a new $10 bank note during a ceremony at the Museum of History in Gatineau, Quebec, Canada, December 8, 2016. REUTERS/Chris Wattie 

Canada's Finance Minister Bill Morneau stands with Wanda Robson after her sister Viola Desmond was chosen to be featured on a new $10 bank note during a ceremony at the Museum of History in Gatineau, Quebec, Canada, December 8, 2016. REUTERS/Chris Wattie TPX IMAGES OF THE DAY 

Canada's Finance Minister Bill Morneau stands with Wanda Robson after her sister Viola Desmond was chosen to be featured on a new $10 bank note during a ceremony at the Museum of History with Governor of Bank of Canada Stephen Poloz and Minister of Status of Women Patty Hajdu, in Gatineau, Quebec, Canada, December 8, 2016. REUTERS/Chris Wattie 

Canada's Finance Minister Bill Morneau stands with Wanda Robson after her sister Viola Desmond was chosen to be featured on a new $10 bank note during a ceremony at the Museum of History with Governor of Bank of Canada Stephen Poloz and Minister of Status of Women Patty Hajdu, in Gatineau, Quebec, Canada, December 8, 2016. REUTERS/Chris Wattie 

Canada's Finance Minister Bill Morneau stands with Wanda Robson after her sister Viola Desmond was chosen to be featured on a new $10 bank note during a ceremony at the Museum of History with Governor of Bank of Canada Stephen Poloz and Minister of Status of Women Patty Hajdu, in Gatineau, Quebec, Canada, December 8, 2016. REUTERS/Chris Wattie 

A man with his monkey holds a 500 Indian rupee banknote given by a tourist while performing at Pushkar Fair, where animals mainly camels are brought to be sold and traded in the desert Indian state of Rajasthan, India, November 9, 2016. REUTERS/Himanshu Sharma 

People hold Thai baht notes as they wait on the roadside while the body of Thailand's King Bhumibol Adulyadej is moved from the Bangkok hospital where he died to the Grand Palace, in Bangkok, Thailand, October 14, 2016. REUTERS/Chaiwat Subprasom TPX IMAGES OF THE DAY

A New Zealand ten dollar note sits underneath a United States one dollar bill in the window of a currency exchange teller in Sydney, Australia, March 10, 2016. REUTERS/David Gray/File Photo 

Bank of England governor Mark Carney tests a new polymer five pound note as he buys lunch at Whitecross Street Market in London, Britain September 13, 2016. REUTERS/Stefan Wermuth 

A man counts his money in central Kiev, Ukraine August 31, 2016. REUTERS/Gleb Garanich 

The SWIFT logo is pictured in this photo illustration taken April 26, 2016. To match Special Report CYBER-HEIST/FEDERAL REUTERS/Carlo Allegri/Illustration/File Photo 

The Swift bank logo is pictured in this photo illustration taken April 26, 2016. To match Special Report CYBER-HEIST/WARNINGS REUTERS/Carlo Allegri/File Photo

A New Zealand ten dollar note sits underneath a United States one dollar bill in the window of a currency exchange teller in Sydney, Australia, March 10, 2016. REUTERS/David Gray/File Photo 

A New Zealand ten dollar note sits underneath a United States one dollar bill in the window of a currency exchange teller in Sydney, Australia, March 10, 2016. REUTERS/David Gray/File Photo

A New Zealand ten dollar note sits underneath a United States one dollar bill in the window of a currency exchange teller in Sydney, Australia, March 10, 2016. REUTERS/David Gray/File Photo 

The SWIFT logo is pictured in this photo illustration taken April 26, 2016. To match Special Report CYBER-HEIST/FEDERAL REUTERS/Carlo Allegri/Illustration/File Photo

Muslim men beg for alms outside a mosque after Friday prayers during the fasting month of Ramadan in Chandigarh, India June 24, 2016. REUTERS/Ajay Verma TPX IMAGES OF THE DAY

Governor of the Bank of England Mark Carney and British artist Tracey Emin unveil the new design for a new British 20 pound note featuring an artwork by British artist JMW Turner enitled 'The Fighting Temeraire tugged to her last Berth to be broken up' (1839) during a media facility in Margate, Britain, April 22, 2016. REUTERS/Glynn Kirk/Pool

Governor of the Bank of England, Mark Carney addresses a press conference to unveil the new design for a new British 20 pound note featuring an artwork by British artist JMW Turner enitled 'The Fighting Temeraire tugged to her last Berth to be broken up' (1839) during a media facility in Margate, Britain, April 22, 2016. REUTERS/Glynn Kirk/Pool

U.S. Republican presidential candidate Ted Cruz (R-TX) pays for his food at a campaign event at Shapiro's Delicatessen in Indianapolis, Indiana, April 21, 2016. REUTERS/Aaron P. Bernstein 

Kenya shilling coins and notes are pictured inside a cashier's booth at a forex exchange bureau in Kenya's capital Nairobi, April 20, 2016. REUTERS/Thomas Mukoya? 

A teller counts Kenya shilling notes inside the cashier's booth at a forex exchange bureau in Kenya's capital Nairobi, April 20, 2016. REUTERS/Thomas Mukoya 

A teller arranges Kenya shilling coins and notes inside the cashier's booth at a forex exchange bureau in Kenya's capital Nairobi, April 20, 2016. REUTERS/Thomas Mukoya 

A teller serves a client with Kenya shilling notes at the cashier's booth of a forex exchange bureau in Kenya's capital Nairobi, April 20, 2016. REUTERS/Thomas Mukoya 

A teller counts Kenya shilling notes on a money counting machine inside the cashier's booth at a forex exchange bureau in Kenya's capital Nairobi, April 20, 2016. REUTERS/Thomas Mukoya 

A teller arranges Kenya shilling coins and notes inside the cashier's booth at a forex exchange bureau in Kenya's capital Nairobi, April 20, 2016. REUTERS/Thomas Mukoya? 

The new 50 Swiss Franc note is seen on a screen after a news conference of the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Media walk in an exibithion of the production of the new 50 Swiss Franc note of the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

A woman attends an exibithion of the production of the new 50 Swiss Franc note of the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

A member of the media walks past an exibithion of the production of the new 50 Swiss Franc note of the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

The new 50 Swiss Franc note is seen on a screen after a news conference of the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich TPX IMAGES OF THE DAY

The new 50 Swiss Franc note is seen on a screen after a news conference of the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich

The new 50 Swiss Franc note is pictured after its presentation by the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss graphic designer Manuela Pfrunder poses in front of the new 50 Swiss Franc note she designed for the Swiss National Bank (SNB) during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss graphic designer Manuela Pfrunder poses in front of the new 50 Swiss Franc note she designed for the Swiss National Bank (SNB) during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

The new 50 Swiss Franc note is pictured after its presentation by the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

The new 50 Swiss Franc note is pictured after its presentation by the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

The new 50 Swiss Franc note is pictured after its presentation by the Swiss National Bank (SNB) in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss National Bank (SNB) Chairman Thomas Jordan (C), Vice-Chairman Fritz Zurbruegg (L) and Governing Board member Andrea Maechler unveil the new 50 Swiss Franc note during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss National Bank (SNB) Chairman Thomas Jordan (C), Vice-Chairman Fritz Zurbruegg (L) and Governing Board member Andrea Maechler pose in front of the new 50 Swiss Franc note during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss National Bank (SNB) Chairman Thomas Jordan (R) and Governing Board member Andrea Maechler cast their shadow over the new 50 Swiss Franc note during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss National Bank (SNB) Chairman Thomas Jordan (R) and Governing Board member Andrea Maechler walk past the new 50 Swiss Franc note during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss National Bank (SNB) Chairman Thomas Jordan (C), Vice-Chairman Fritz Zurbruegg (L) and Governing Board member Andrea Maechler pose in front of the new 50 Swiss Franc note during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Swiss National Bank (SNB) Chairman Thomas Jordan (C), Vice-Chairman Fritz Zurbruegg (L) and Governing Board member Andrea Maechler unveil the new 50 Swiss Franc note during a presentation in Bern, Switzerland April 6, 2016. REUTERS/Ruben Sprich 

Chinese 100 yuan banknotes are seen in a counting machine while a clerk counts them at a branch of a commercial bank in Beijing, China, in this March 30, 2016 file picture. REUTERS/Kim Kyung-Hoon/Files 

Nigerian naira notes are seen in this picture illustration March 15, 2016 REUTERS/Afolabi Sotunde/Illustration 

A demonstrator holds fake banknotes with an image of Brazil's former President Luiz Inacio Lula da Silva during a protest against Brazil's President Dilma Rousseff, part of nationwide protests calling for her impeachment, near the Brazilian national congress in Brasilia, Brazil, March 13, 2016. REUTERS/Ueslei Marcelino 

A New Zealand ten dollar note sits underneath a United States one dollar bill in the window of a currency exchange teller in Sydney, Australia, March 10, 2016. New Zealand's central bank unexpectedly cut interest rates to a record-low 2.25 percent on Thursday, triggering a slide in the local dollar and sparking talk of a global currency war as countries seek to revitalise their economies in a world of slow growth. REUTERS/David Gray 

A New Zealand ten dollar note sits underneath a United States one dollar bill in the window of a currency exchange teller in Sydney, Australia, March 10, 2016. New Zealand's central bank unexpectedly cut interest rates to a record-low 2.25 percent on Thursday, triggering a slide in the local dollar and sparking talk of a global currency war as countries seek to revitalise their economies in a world of slow growth. REUTERS/David Gray 

A New Zealand ten dollar note sits underneath a United States one dollar bill in the window of a currency exchange teller in Sydney, Australia, March 10, 2016. New Zealand's central bank unexpectedly cut interest rates to a record-low 2.25 percent on Thursday, triggering a slide in the local dollar and sparking talk of a global currency war as countries seek to revitalise their economies in a world of slow growth. REUTERS/David Gray