A realtor's for sale sign stands outside a house that had been sold in Toronto, Ontario, Canada May 20, 2021. REUTERS/Chris Helgren ?

A realtor's for sale sign stands outside a house that had been sold in Toronto, Ontario, Canada May 20, 2021. REUTERS/Chris Helgren ?

A realtor's sign stands outside a house for sale in Toronto, Ontario, Canada May 20, 2021. REUTERS/Chris Helgren ?

A realtor's sign stands outside a house for sale in Toronto, Ontario, Canada May 20, 2021. REUTERS/Chris Helgren ?

A realtor's for sale sign stands outside a house that had been sold in Toronto, Ontario, Canada May 20, 2021. REUTERS/Chris Helgren ?

A realtor's for sale sign stands outside a house that had been sold in Toronto, Ontario, Canada May 20, 2021. REUTERS/Chris Helgren ?

The company logo of PHH Mortgage is seen on their headquarters in Mount Laurel, New Jersey, U.S., May 15, 2021. REUTERS/Andrew Kelly

The company logo of PHH Mortgage is seen on their headquarters in Mount Laurel, New Jersey, U.S., May 15, 2021. REUTERS/Andrew Kelly

The company logo of PHH Mortgage is seen on their headquarters in Mount Laurel, New Jersey, U.S., May 15, 2021. REUTERS/Andrew Kelly

The company logo of PHH Mortgage is seen on their headquarters in Mount Laurel, New Jersey, U.S., May 15, 2021. REUTERS/Andrew Kelly

A street sign for Mortgage Way is seen in Mount Laurel, New Jersey, U.S., May 15, 2021. REUTERS/Andrew Kelly

The company logo of PHH Mortgage is seen on their headquarters in Mount Laurel, New Jersey, U.S., May 15, 2021. REUTERS/Andrew Kelly

The company logo of PHH Mortgage is seen on their headquarters in Mount Laurel, New Jersey, U.S., May 15, 2021. REUTERS/Andrew Kelly

Supreme Court sign is pictured in Warsaw, Poland May 11, 2021. The court's Civil Chamber is due to issue guidance on Swiss francs mortgages today. REUTERS/Kacper Pempel

Supreme Court sign is pictured in Warsaw, Poland May 11, 2021. The court's Civil Chamber is due to issue guidance on Swiss francs mortgages today. REUTERS/Kacper Pempel

People gather outside the Polish Supreme Court after a bomb threat in Warsaw, Poland May 11, 2021. The court's Civil Chamber is due to issue guidance on Swiss francs mortgages today. REUTERS/Kacper Pempel

People walk outside the Polish Supreme Court after a bomb threat, the day the court's Civil Chamber is due to issue guidance on Swiss francs mortgages, in Warsaw, Poland May 11, 2021. REUTERS/Kacper Pempel

Firefighters wait outside the Polish Supreme Court after a bomb threat, the day the court's Civil Chamber is due to issue guidance on Swiss francs mortgages, in Warsaw, Poland May 11, 2021. REUTERS/Kacper Pempel

Police officers chat outside the Polish Supreme Court after a bomb threat, the day the court's Civil Chamber is due to issue guidance on Swiss francs mortgages, in Warsaw, Poland May 11, 2021. REUTERS/Kacper Pempel

Fire truck is pictured outside the Polish Supreme Court after a bomb threat, the day the court's Civil Chamber is due to issue guidance on Swiss francs mortgages, in Warsaw, Poland May 11, 2021. REUTERS/Kacper Pempel

The logo of Polish bank PKO BP is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

Polish lender mBank bank logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

Polish lender mBank bank logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The Polish unit of Spain's Santander (Santander Bank Polska) logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

Polish lender mBank bank logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The Polish unit of Spain's Santander (Santander Bank Polska) logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

Polish lender mBank bank logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

People walk past a branch of the Polish unit of Spain's Santander (Santander Bank Polska), in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The Polish unit of Spain's Santander (Santander Bank Polska) logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

Polish lender mBank bank logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The Polish unit of Spain's Santander (Santander Bank Polska) logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The Polish unit of Spain's Santander (Santander Bank Polska) logo is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The logo of Polish bank PKO BP is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The logo of Polish bank PKO BP is cleaned in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The logo of Polish bank PKO BP is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The logo of Polish bank PKO BP is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

The logo of Polish bank PKO BP is pictured in Warsaw, Poland, May 10, 2021. REUTERS/Kacper Pempel

Kamil Chwiedosik, founder of the Life Without Credit organisation, speaks about mortgages in Swiss francs during an interview at his office in Warsaw, Poland May 6, 2021. Picture taken May 6, 2021. REUTERS/Kacper Pempel

Polish IT specialist Przemyslaw Rowinski speaks about his mortgage in Swiss francs during an interview at his apartment in Warsaw, Poland May 6, 2021. Picture taken May 6, 2021. REUTERS/Kacper Pempel

Polish IT specialist Przemyslaw Rowinski speaks about his mortgage in Swiss francs during an interview at his apartment in Warsaw, Poland May 6, 2021. Picture taken May 6, 2021. REUTERS/Kacper Pempel

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Britain's Prime Minister Boris Johnson visits Barratt Homes Development to launch the government's mortgage guarantee scheme, in Great Oldbury, Gloucestershire, Britain April 19, 2021. Jonathan Buckmaster/Pool via REUTERS

Activists hold a banner reading "We shield the regulation of rental prices" during a protest of he Mortgage Victims' Platform (PAH) demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

Activists wearing "La casa de papel" (Money Heist) costumes applaud in front of BBVA bank office during a protest of he Mortgage Victims' Platform (PAH) demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

Activists of the Mortgage Victims' Platform (PAH) protest demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

Activists wearing "La casa de papel" (Money Heist) costumes place placards on a facade of BBVA bank office during a protest of he Mortgage Victims' Platform (PAH) demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

Activists wearing "La casa de papel" (Money Heist) costumes place placards on a facade of BBVA bank office during a protest of he Mortgage Victims' Platform (PAH) demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

Activists hold a banner in front of BBVA bank office during a protest of he Mortgage Victims' Platform (PAH) demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

Activists wearing "La casa de papel" (Money Heist) costumes hold smoke flares during a protest of he Mortgage Victims' Platform (PAH) demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

Activists of the Mortgage Victims' Platform (PAH) protest demanding a price-regulated house rental in Barcelona, Spain March 20, 2021. REUTERS/Albert Gea

An Allied Irish Bank (AIB) worker cleans the the safety deposit box outside of a branch of AIB featuring an advertisement offering mortgage appointments in Dublin, Ireland, March 1, 2021. REUTERS/Clodagh Kilcoyne