Clay piggy banks are displayed in a store in the Central Market in San Jose, Costa Rica March 13, 2019. REUTERS/Juan Carlos Ulate 

G7 delegates pose for a family photo at the G7 Finance Ministers summit in Whistler, British Columbia, Canada, May 31, 2018. Pictured here are (L-R) CEO of the World Bank Kristalina Georgieva, Italy's Director General of International Cooperation Giorgio Marrapodi, France's French ambassador to Canada Kareen Rispal, United Kingdom's Secretary of State for International Development Penny Mordaunt, Canada's Minister of International Development Marie Claude Bibeau, Japan's State Minister for Foreign Affairs Kazuyuki Nakane, German Parliamentary secretary of State, Maria Flachsbarth, United States' Acting Deputy Administrator David Moore, European Union's Director-General for International Development Stefano Manservisi. REUTERS/Ben Nelms 

G7 delegates pose for a family photo at the G7 Finance Ministers summit in Whistler, British Columbia, Canada, May 31, 2018. Pictured here are (L-R) CEO of the World Bank Kristalina Georgieva, Italy's Director General of International Cooperation Giorgio Marrapodi, France's French ambassador to Canada Kareen Rispal, United Kingdom's Secretary of State for International Development Penny Mordaunt, Canada's Minister of International Development Marie Claude Bibeau, Japan's State Minister for Foreign Affairs Kazuyuki Nakane, German Parliamentary secretary of State, Maria Flachsbarth, United States' Acting Deputy Administrator David Moore, European Union's Director-General for International Development Stefano Manservisi. REUTERS/Ben Nelms 

World Bank President Jim Yong Kim (L), Bill Gates, co-chair of the Bill & Melinda Gates Foundation and British Secretary of State for International Development Penny Mordaunt pose before a panel discussion on Building Human Capital during the IMF/World Bank spring meeting in Washington, U.S., April 21, 2018. REUTERS/Yuri Gripas 

Bank of Canada Governor Stephen Poloz wears cufflinks made from Canadian pennies during a news conference in Ottawa, Ontario, Canada, January 17, 2018. REUTERS/Chris Wattie 

General view of the Ha'penny bridge over the river Liffey in Dublin, Ireland August 14, 2017. Picture taken August 14, 2017. REUTERS/Clodagh Kilcoyne 

General view of the Ha'penny bridge over the river Liffey in Dublin, Ireland August 14, 2017. Picture taken August 14, 2017. REUTERS/Clodagh Kilcoyne 

Bank of Canada Governor Stephen Poloz wears cufflinks made from 1955 Canadian pennies at an Empire Club of Canada luncheon in Toronto, December 8, 2015. REUTERS/Chris Helgren 

A piggybank painted in the colours of the Greek flag with a 20 euro banknote in it's slot, stands amongst various euro coins in this picture illustration taken in Berlin, Germany June 30, 2015. The head of the European Commission made a last-minute offer to try to persuade Greek Prime Minister Alexis Tsipras to accept a bailout deal he has rejected before a referendum on Sunday which EU partners say will be a choice of whether to stay in the euro. But Greek government sources said the leftist premier stood by his rejection of the creditors' conditions and Greece would default on a crucial repayment due to the International Monetary Fund on Tuesday, plunging it deeper into financial crisis. REUTERS/Pawel Kopczynski

A potter carries a basket filled with clay money boxes at a workshop ahead of the Hindu festival of Diwali in New Delhi October 16, 2014. Earthen goods are sold in large numbers during Diwali, the annual Hindu festival of lights, as people use them to decorate their homes. The Diwali festival will be observed this year on October 23. REUTERS/Anindito Mukherjee (INDIA - Tags: SOCIETY RELIGION) 

(From L to R) Group Chief Executive of Barclays Anthony Jenkins and Tony James, president of the Blackstone Group, listen to Penny Pritzker, U.S. Secretary of Commerce, speak during a breakout session at the Clinton Global Initiative 2014 (CGI) in New York, September 23, 2014. The CGI was created by former U.S. President Bill Clinton in 2005 to gather global leaders to discuss solutions to the world's problems. REUTERS/Shannon Stapleton (UNITED STATES - Tags: POLITICS BUSINESS) 

Jonathan Lemitelamy, 18, a student in the Culinary Job Training Program at the New Hampshire Food Bank, counts out pennies by candlelight to buy gasoline for the family car at his home in Manchester, New Hampshire November 6, 2013. Fritza Lemitelamy, a single mother of six, and two of her children are taking the eight week course for the unemployed and the underemployed with the ultimate goal of opening their own Haitian restaurant, though currently the electricity at their home was shut off because they were unable to keep up with the bills. The class, which in addition to teaching kitchen and life skills produces meals for three agencies of the New Hampshire Food Bank. REUTERS/Brian Snyder (UNITED STATES - Tags: SOCIETY FOOD POVERTY) 

Catalina Garcia, 55, piggybacks her son Gilson, a 30-year-old suffering from cerebral palsy, as she walks while begging at the Mercado la Terminal market in Guatemala City November 28, 2012. Both mother and son are now living in a guest house after they were evicted a few days ago from the irregular settlement where they had been living at with other families. Catalina said she was originally from Coatepeque, in the north of the country, and came to the city six months ago to find a better life. Catalina would piggyback her son, who has lost his ability to walk since young, as she begs for money from people at markets, streets and while travelling on buses. REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: HEALTH SOCIETY POVERTY) 

A woman and her baby, flood evacuees from Odogwu in Ibaji local government area, arrive on the beach of Idah in Nigeria's central state of Kogi September 28, 2012. Nigeria's worst flooding in decades has displaced more than 10,000 people in the centre of the country over the past week and stranded some villagers on rooftops, emergency services said on September 27. Picture taken September 28, 2012. REUTERS/Afolabi Sotunde (NIGERIA - Tags: DISASTER ENVIRONMENT SOCIETY) 

Elderly women blush while shopping at the Iowa 80 truck stop during the truck stop's 33rd Annual Truckers Jamboree in Walcott, Iowa on July 12, 2012. The Iowa 80, located along Interstate 80, is said to be the world's largest truck stop. REUTERS/Adrees Latif (UNITED STATES - Tags: SOCIETY) 

Canadian pennies are arranged in this photo illustration in Toronto, Ontario, March 30, 2012. Canada's puny penny coin, loved by some but an annoyance to many, will be withdrawn from circulation this year because it costs too much to make and is a pecuniary pest, the government announced on Thursday. Ottawa said the 1 cent coins retained only one twentieth of its original purchasing power. It costs 1.6 Canadian cents to produce each one cent coin and stamping out the penny will save around C$11 million ($11 million) a year. REUTERS/Michael Fiala (CANADA - Tags: BUSINESS POLITICS) 

Canadian pennies are arranged in this photo illustration in Toronto, Ontario, March 30, 2012. Canada's puny penny coin, loved by some but an annoyance to many, will be withdrawn from circulation this year because it costs too much to make and is a pecuniary pest, the government announced on Thursday. Ottawa said the 1 cent coins retained only one twentieth of its original purchasing power. It costs 1.6 Canadian cents to produce each one cent coin and stamping out the penny will save around C$11 million ($11 million) a year. REUTERS/Michael Fiala (CANADA - Tags: BUSINESS POLITICS) 

U.S. Federal Reserve Chairman Ben Bernanke (L) listens to a question by former U.S. Representative Tim Penny at a meeting of the Economic Club of Minnesota in Minneapolis September 8, 2011. Bernanke said on Thursday the U.S. central bank would spare no effort to boost disappointingly weak growth and reduce unemployment, while downplaying concerns about inflation. REUTERS/Eric Miller (UNITED STATES - Tags: BUSINESS POLITICS) 

U.S. Federal Reserve Chairman Ben Bernanke (L) laughs with former U.S. Representative Tim Penny at a meeting of the Economic Club of Minnesota in Minneapolis September 8, 2011. Bernanke said on Thursday the U.S. central bank would spare no effort to boost disappointingly weak growth and reduce unemployment, while downplaying concerns about inflation. REUTERS/Eric Miller (UNITED STATES - Tags: BUSINESS POLITICS) 

A piggy bank adorned with the colours of Britain's Union Jack flag is displayed in a souvenir shop in London March 24, 2010. Britain's Labour government set the stage on Wednesday for a looming election with a budget that promised a 2.5 billion pounds ($3.75 billion) package to boost growth, higher taxes for the well-off and lower borrowing than predicted only three months ago. REUTERS/Darrin Zammit Lupi (BRITAIN - Tags: BUSINESS POLITICS ELECTIONS) 

A row of piggy banks adorned with the colours of Britain's Union Jack flag are displayed in a souvenir shop in London March 24, 2010. Britain's Labour government set the stage on Wednesday for a looming election with a budget that promised a 2.5 billion pounds ($3.75 billion) package to boost growth, higher taxes for the well-off and lower borrowing than predicted only three months ago. REUTERS/Darrin Zammit Lupi (BRITAIN - Tags: BUSINESS POLITICS ELECTIONS IMAGES OF THE DAY) 

A man sells piggy banks in the shape of former Thai prime minister Thaksin Shinawatra in Bangkok February 2, 2010. Hundreds of so-called "red shirt" protesters said they were rallying against any potential military intervention in politics and coup attempts. REUTERS/Chaiwat Subprasom (THAILAND - Tags: POLITICS) CIVIL UNREST) 

Piggy Banks with Westpac logos on the side are seen at a Westpac Banking Corp branch in Sydney November 4, 2009. Westpac Banking Corp, Australia's third-biggest lender, forecast a fall in bad debts next year, marking the local banking industry's most confident outlook to date, even as it reported a fall in profits. REUTERS/Tim Wimborne (AUSTRALIA BUSINESS) 

A piggy bank is seen among rubbles that burned during the Station Fire in the Tujunga area of Los Angeles, California September 1, 2009. The so-called Station Fire has charred 127,000 acres (51,000 hectares), an area nearly the size of Chicago, destroyed at least 62 homes, and is still capable of terrible destruction, fire commander Mike Dietrich said. REUTERS/Mario Anzuoni (UNITED STATES ENVIRONMENT DISASTER) 

Singapore's Member of Parliament, Penny Low (C) addresses the HOPE Global Financial Literacy Summit at a community center in Washington June 17, 2009. Also pictured is Casablanca Stock Exchange CEO Karim Hajji (L). REUTERS/Jonathan Ernst (UNITED STATES POLITICS BUSINESS) 

Piggy banks filled with money are piled up during a "Save Our Economy" campaign by Korea Saemaulundong Centre in Seoul April 7, 2009. The piggy banks were distributed to people by the centre and re-collected with donations to help the unfortunate who are suffering due to the global economy crisis. REUTERS/Jo Yong-Hak (SOUTH KOREA BUSINESS SOCIETY) 

Coin boxes in the shape of an ox are displayed for sale at a Chinese New Year market in Singapore's Chinatown January 14, 2009. Chinese people all over the world will usher in the Lunar New Year of the ox on January 26. REUTERS/Tim Chong (SINGAPORE) 

A man passes a mortgage advert in a high street bank window in west London November 6, 2008. The Bank of England made a shock 1-1/2 percentage point cut in interest rates on Thursday to just 3 percent, their lowest level in more than half a century, as it seeks to prevent the country from sliding into a deep recession. REUTERS/Toby Melville (BRITAIN) 

Share trader Penny Jackson reacts on the development of the German share price index DAX at the German stock exchange in Frankfurt, October 24, 2008. REUTERS/Kai Pfaffenbach (GERMANY) 

Share trader Penny Jackson reacts on the development of the German share price index DAX at the German stock exchange in Frankfurt, October 24, 2008. REUTERS/Kai Pfaffenbach (GERMANY) 

Penny Boudreau, mother of 12 year-old Karissa Boudreau leaves the funeral home with her boyfried Vernon MacCumber following her daughter's funeral service in Barrington, Nova Scotia, February 19, 2008. The grade 6 student's body was discovered February 9 along the banks of the LaHave river near the town of Bridgewater. Royal Canadian Mounted Police are calling her death a homicide. REUTERS/Paul Darrow (CANADA) 

Vernon MacCumber, boyfriend of the mother, of the 12 year-old Karissa Boudreau, Penny Boudreau, hugs two mourners following the funeral service in Barrington, Nova Scotia, February 19, 2008. The grade 6 student's body was discovered February 9 along the banks of the LaHave river near the town of Bridgewater. Royal Canadian Mounted Police are calling her death a homicide. REUTERS/Paul Darrow (CANADA) 

Penny Boudreau, mother of 12 year-old Karissa Boudreau leaves the funeral home with her boyfried Vernon MacCumber following her daughter's funeral service in Barrington, Nova Scotia, February 19, 2008. The grade 6 student's body was discovered February 9 along the banks of the LaHave river near the town of Bridgewater. Royal Canadian Mounted Police are calling her death a homicide. REUTERS/Paul Darrow (CANADA) 

Ewald Nowotny (L) Chief Exekutive of Austrian bank BAWAG P.S.K, presents a penny bank to Rudolf Hundstorfer, chief of the Austrian trade union federation, and former owner of the bank, during a news conference in Vienna May 16, 2007. REUTERS/Herwig Prammer (AUSTRIA) 

Ewald Nowotny (L) Chief Exekutive of Austrian bank BAWAG P.S.K, presents a penny bank to Rudolf Hundstorfer, chief of the Austrian trade union federation, and former owner of the bank, during a news conference in Vienna May 16, 2007. REUTERS/Herwig Prammer (AUSTRIA) 

An aerial view of the future Hong Kong Disneyland which is under reclamation
at Penny's Bay on Lantau island, October 24, 2002. Hong Kong is banking on
the theme park, due to open in early 2006, to inject some life into its
sagging economy and lure more tourists. Credit rating agency Standard &
Poor's cut its outlook on Hong Kong's long-term local currency rating to
negative from stable on Thursday, citing persistent economic weakness in the
territory and its gaping deficit. REUTERS/Bobby Yip

BY/CP 

An aerial view of the future Hong Kong Disneyland which is under reclamation
at Penny's Bay on Lantau island, October 24, 2002. Hong Kong is banking on
the theme park, due to open in early 2006, to inject some life into its
sagging economy and lure more tourists. Credit rating agency Standard &
Poor's cut its outlook on Hong Kong's long-term local currency rating to
negative from stable on Thursday, citing persistent economic weakness in the
territory and its gaping deficit. REUTERS/Bobby Yip

BY/JS 

An aerial view of the future Hong Kong Disneyland which is under reclamation
at Penny's Bay on Lantau island, October 24, 2002. Hong Kong is banking on
the theme park, due to open in early 2006, to inject some life into its
sagging economy and lure more tourists. Credit rating agency Standard &
Poor's cut its outlook on Hong Kong's long-term local currency rating to
negative from stable on Thursday, citing persistent economic weakness in the
territory and its gaping deficit. REUTERS/Bobby Yip

BY/CP 

Small investors monitor share prices inside a Hong Kong bank September 10,
2002. A Hong Kong government panel said on Tuesday it found some errors of
judgement in the handling of a stock exchange consultation paper, which
triggered a sharp sell-off in shares of small companies, when it was issued
in July. The release of the consultation document, which proposed the
de-listing of so-called "penny" stocks, spurred heavy selling which wiped
out an estimated HK$10 billion (US$1.28 billion) from their combined market
value. REUTERS/Kin Cheung

KC/RCS 

An investor monitors share prices inside a Hong Kong bank September 10,
2002. A Hong Kong government panel said on Tuesday it found some errors of
judgement in the handling of a stock exchange consultation paper, which
triggered a sharp sell-off in shares of small companies, when it was issued
in July. The release of the consultation document, which proposed the
de-listing of so-called "penny" stocks, spurred heavy selling which wiped
out an estimated HK$10 billion (US$1.28 billion) from their combined market
value. REUTERS/Kin Cheung

KC/RCS 

Small investors monitor share prices inside a bank in Hong Kong July 29,
2002. Hong Kong-listed "penny" stocks, popular among small investors in the
territory, rebounded in early trade on Monday after the stock exchange
backtracked on a proposal to delist such shares. Hong Kong's key share index
ended morning session 1.05 percent higher to 9,876.15 points, as investors
scooped up recently battered counters. REUTERS/Bobby Yip

BY/CP 

Feet of small investors, mainly housewives, are seen inside a bank in Hong
Kong as they gather in front of monitors displaying share prices July 29,
2002. Hong Kong listed "penny" stocks, popular among small investors in the
territory, rebounded in early trade on Monday after the stock exchange
backtracked on a proposal to delist such shares. Hong Kong's key share index
ended morning session 1.05 percent higher to 9,876.15 points, as investors
scooped up recently battered counters. REUTERS/Bobby Yip

BY/CP 

Small investors monitor share prices at a bank in Hong Kong July 29, 2002.
Hong Kong listed "penny" stocks, popular among small investors in the
territory, rebounded in early trade on Monday after the stock exchange
backtracked on a proposal to delist such shares. Hong Kong's key share index
ended morning session 1.05 percent higher to 9,876.15 points, as investors
scooped up recently battered counters. REUTERS/Bobby Yip

BY/PB