Extract the 2021 Total Profit or Operating Income from the following text

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)[1]
Net income	Increase A$5.46 billion (2021)[1]
Total assets	Increase A$935.88 billion (2021)[1]
Total equity	Increase A$72.09 billion (2021)[1]
Number of employees	40,143 (2021)[1]
Subsidiaries	St George Bank
BankSA
Bank of Melbourne
Westpac New Zealand
Website	
westpac.com.au
westpac.co.nz

The 2021 Operating Income was A$21.22 billion