Extract the total number of employees in 2021 at Westpac Bank in Australia?
Type Public
 Traded as 
 ASX: WBC
 NZX: WBC
 S&P/ASX 200 component
 Industry Banking
 Financial services
 Predecessor Bank of New South Wales
 Commercial Bank of Australia
 Founded 8 April 1817 (as the Bank of New South Wales)
 4 May 1982 (as Westpac Banking Corporation)
 Headquarters Westpac Place
 Sydney, New South Wales, Australia
 Area served Worldwide
 Key people John McFarlane (Chairman)
 Peter King (CEO)
 Products Finance and insurance, consumer banking, corporate banking, investment banking, investment management, global wealth management, private equity, mortgages, credit cards
 Operating income Increase A$21.22 billion (2021)
 Net income Increase A$5.46 billion (2021)
 Total assets Increase A$935.88 billion (2021)
 Total equity Increase A$72.09 billion (2021)
 Number of employees 40,143 (2021)
 Subsidiaries St George Bank
 BankSA
 Bank of Melbourne
 Westpac New Zealand
 Website 
 westpac.com.au
 westpac.co.nz
40,143 people