Scaffolders work on a construction site in London, Britain, October 20, 2021. REUTERS/Toby Melville

Scaffolders work on a construction site in London, Britain, October 20, 2021. REUTERS/Toby Melville

A stop sign is pictured in front of a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

A worker carries out repairs of a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

A passenger train used on the TGV Atlantique line of the SNCF network sits at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

An employee walks towards a passenger train used on the TGV Atlantique line of the SNCF network sitting at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

A worker carries out repairs of a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

An employee walks towards a passenger train used on the TGV Atlantique line of the SNCF network sitting at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

Employees perform refit and maintenance work on a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

Employees perform refit and maintenance work on a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

An employee performs refit and maintenance work on a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

An employee walks towards a passenger train used on the TGV Atlantique line of the SNCF network sitting at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

Employees perform refit and maintenance work on a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

A worker carries out repairs of a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

A worker carries out repairs of a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

Employees perform refit and maintenance work on a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

An employee walks towards a passenger train used on the TGV Atlantique line of the SNCF network sitting at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

An employee performs refit and maintenance work on a passenger train used on the TGV Atlantique line of the SNCF network, at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

A passenger train used on the TGV Atlantique line of the SNCF network sits at the Technicentre workshop in Rennes, France, October 20, 2021. REUTERS/Benoit Tessier

A street cleaner wearing a protective face mask works in the grounds of St Thomas' Hospital, beside the National Covid Memorial Wall, a dedication of thousands of hand painted hearts and messages commemorating victims of the COVID-19 pandemic, in London, Britain, October 20, 2021. REUTERS/Toby Melville

A sign directs employees to return-to-work COVID-19 testing at the World Bank in Washington, U.S. October 19, 2021. REUTERS/Jonathan Ernst

A sign directs employees to return-to-work COVID-19 testing at the World Bank in Washington, U.S. October 19, 2021. REUTERS/Jonathan Ernst

A sign directs employees to return-to-work COVID-19 testing at the World Bank in Washington, U.S. October 19, 2021. REUTERS/Jonathan Ernst

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., October 19, 2021. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., October 19, 2021. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., October 19, 2021. REUTERS/Brendan McDermid

A specialist trader works inside a post on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., October 19, 2021. REUTERS/Brendan McDermid

A military working dog face mask is displayed at the 22nd Milipol Paris, the worldwide exhibition dedicated to homeland security, in Villepinte near Paris, France, October 19, 2021. REUTERS/Benoit Tessier

Workers leave a construction site at the end of their work day in Beijing, China, October 19, 2021. REUTERS/Thomas Peter

Virgil Pole, 72, poses for a photo in front of his work room and smoke house on the Hoopa Valley Reservation in Hoopa, California, U.S., October 17, 2021. REUTERS/Stephanie Keith

Alexander Melchior works on cells for hydrogen generation modules at Germany's Sunfire firm in Dresden, Germany, October 18, 2021. REUTERS/Matthias Rietschel

Manuela Heinrich works on cells for hydrogen generation modules at Germany's Sunfire firm in Dresden, Germany, October 18, 2021. REUTERS/Matthias Rietschel

Manuela Heinrich works on cells for hydrogen generation modules at Germany's Sunfire firm in Dresden, Germany, October 18, 2021. REUTERS/Matthias Rietschel

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., October 18, 2021. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., October 18, 2021. REUTERS/Brendan McDermid

Traders work on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., October 18, 2021. REUTERS/Brendan McDermid

Men work at the construction site of a highrise building in Beijing, China, October 18, 2021. REUTERS/Thomas Peter

Men work at the construction site of a highrise building in Beijing, China, October 18, 2021. REUTERS/Thomas Peter

Virgil Pole, 72, poses for a photo in front of his work room and smoke house on the Hoopa Valley Reservation in Hoopa, California, U.S., October 17, 2021. REUTERS/Stephanie Keith

Nasima, 35, works to make prostheses at the Red Cross rehabilitation center in Kabul, Afghanistan October 17, 2021. Picture taken October 17, 2021. REUTERS/Jorge Silva

Farzana works to make prostheses at the Red Cross rehabilitation center in Kabul, Afghanistan October 17, 2021. Picture taken October 17, 2021. REUTERS/Jorge Silva

Disabled workers work on prostheses at the Red Cross rehabilitation center in Kabul, Afghanistan October 17, 2021. Picture taken October 17, 2021. REUTERS/Jorge Silva

Police officers set up a forensics tent in the front garden of a house local media reported to be an address belonging to a man arrested in connection with the killing of British MP David Amess, who was stabbed to death during a meeting with constituents, as other officers stand guard outside, in London, Britain, October 17, 2021. REUTERS/Henry Nicholls

A forensics tent is seen in the front garden of a house believed to be an address belonging to a man arrested in connection with the killing of British MP David Amess, who was stabbed to death during a meeting with constituents, as police officers stand guard outside, in London, Britain, October 17, 2021. REUTERS/Henry Nicholls

Police officers carry equipment into the front garden of a house believed to be an address belonging to a man arrested in connection with the killing of British MP David Amess, who was stabbed to death during a meeting with constituents, in London, Britain, October 17, 2021. REUTERS/Henry Nicholls

Police officers set up a forensics tent in the front garden of a house believed to be an address belonging to a man arrested in connection with the killing of British MP David Amess, who was stabbed to death during a meeting with constituents, in London, Britain, October 17, 2021. REUTERS/Henry Nicholls

Police officers stand guard outside a house believed to be an address belonging to a man arrested in connection with the killing of British MP David Amess, who was stabbed to death during a meeting with constituents, as a camera operator works at the scene, in London, Britain, October 17, 2021. REUTERS/Henry Nicholls

Police officers and a forensic specialist work at the scene where British MP David Amess was stabbed to death during a meeting with constituents, at Belfairs Methodist Church, in Leigh-on-Sea, Britain, October 16, 2021. REUTERS/Peter Nicholls

Hoopa Valley Tribe fisheries employees work in a weir, a non-lethal way to catch fish and run by the Hoopa Valley tribe, on the Trinity River on the Hoopa Valley Reservation in Hoopa, California, U.S., October 15, 2021. REUTERS/Stephanie Keith

People work at the chip packaging firm Unisem's plant in Ipoh, Malaysia October 15, 2021. REUTERS/Lim Huey Teng

A woman works outside on a park bench during an unseasonably warm day in New York City, U.S., October 15, 2021. REUTERS/Brendan McDermid

A worker of La Geo electrical company works in a control room at the Berlin geothermal plant, where the Salvadoran government installed a Bitcoin mining facility for the use of bitcoin as legal tender, in Alegria, El Salvador, October 15, 2021. REUTERS/Jose Cabezas

A worker of La Geo electrical company works in a control room at the Berlin geothermal plant, where the Salvadoran government installed a Bitcoin mining facility for the use of bitcoin as legal tender, in Alegria, El Salvador, October 15, 2021. REUTERS/Jose Cabezas

A forensic specialist works at the scene where MP David Amess was stabbed during constituency surgery, in Leigh-on-Sea, Britain October 15, 2021. REUTERS/Tony O'Brien

Forensic specialists work at the scene where MP David Amess was stabbed during constituency surgery, in Leigh-on-Sea, Britain October 15, 2021. REUTERS/Tony O'Brien

A forensic specialist works at the scene where MP David Amess was stabbed during constituency surgery, in Leigh-on-Sea, Britain October 15, 2021. REUTERS/Tony O'Brien

A forensic specialist works at the scene where MP David Amess was stabbed during constituency surgery, in Leigh-on-Sea, Britain October 15, 2021. REUTERS/Tony O'Brien

Forensic specialists work at the scene where MP David Amess was stabbed during constituency surgery, in Leigh-on-Sea, Britain October 15, 2021. REUTERS/Tony O'Brien

Britain's Secretary of State for Work and Pensions Therese Coffey arrives for a regional cabinet meeting at Rolls Royce in Bristol, Britain October 15, 2021. Steve Parsons/Pool via REUTERS