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

Context: 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 
4 May 1982 
Headquarters	Westpac Place
Sydney, New South Wales, Australia
Area served	Worldwide
Key people	John McFarlane 
Peter King 
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 
Net income	Increase A$5.46 billion 
Total assets	Increase A$935.88 billion 
Total equity	Increase A$72.09 billion 
Number of employees	40,143 
Subsidiaries	St George Bank
BankSA
Bank of Melbourne
Westpac New Zealand
Website	
westpac.com.au
westpac.co.nz

Answer: The 2021 Operating Income was A$21.22 billion