Shaktikanta Das, the new Reserve Bank of India (RBI) Governor, attends a news conference in Mumbai, India, December 12, 2018. REUTERS/Danish Siddiqui 

Shaktikanta Das, the new Reserve Bank of India (RBI) Governor, gestures as he attends a news conference in Mumbai, India, December 12, 2018. REUTERS/Danish Siddiqui 

Shaktikanta Das, the new Reserve Bank of India (RBI) Governor, attends a news conference in Mumbai, India, December 12, 2018. REUTERS/Danish Siddiqui 

Shaktikanta Das, the new Reserve Bank of India (RBI) Governor, attends a news conference in Mumbai, India, December 12, 2018. REUTERS/Danish Siddiqui 

Shaktikanta Das, the new Reserve Bank of India (RBI) Governor, arrives to attend a news conference in Mumbai, India, December 12, 2018. REUTERS/Danish Siddiqui 

Shaktikanta Das, the new Reserve Bank of India (RBI) Governor, arrives to attend a news conference in Mumbai, India, December 12, 2018. REUTERS/Danish Siddiqui 

The Reserve Bank of India (RBI) Governor Urjit Patel and Deputy Governor Viral Acharya (L) attend a news conference after a monetary policy review in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

(L-R) The Reserve Bank of India (RBI) Deputy Governors N S Vishwanathan, MK Jain, Governor Urjit Patel, Executive Director Michael Debabrata Patra, Deputy Governors B P Kanungo and Viral Acharya pose for a photograph after a monetary policy review in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

A security guard stands next to the logo of Reserve Bank of India (RBI) inside its headquarters in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Deputy Governor Viral Acharya attends a news conference after a monetary policy review in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Deputy Governor Viral Acharya arrives to attend a news conference after a monetary policy review in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Governor Urjit Patel pauses during a news conference after a monetary policy review in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Deputy Governor Viral Acharya attends a news conference after a monetary policy review in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Governor Urjit Patel arrives to attend a news conference after a monetary policy review in Mumbai, India, December 5, 2018. REUTERS/Francis Mascarenhas 

S. Gurumurthy, a member in the central board of directors of the Reserve Bank of India (RBI), speaks on his mobile phone as he leaves after a board meeting at the RBI headquarters in Mumbai, India, November 19, 2018. REUTERS/Francis Mascarenhas 

Bharat Doshi, a member in the central board of directors of the Reserve Bank of India (RBI), arrives for a board meeting at the RBI headquarters in Mumbai, India, November 19, 2018. REUTERS/Francis Mascarenhas 

Security guards stand next to the logo of Reserve Bank of India (RBI) inside its headquarters in Mumbai, India, November 19, 2018. REUTERS/Francis Mascarenhas 

A Reserve Bank of India (RBI) logo is seen at the gate of its office in New Delhi, India, November 9, 2018. REUTERS/Altaf Hussain 

Police detain a supporter of India's main opposition Congress Party during a protest to mark two years since demonetisation was implemented by Prime Minister Narendra Modi, outside the Reserve Bank of India (RBI) building in New Delhi, India, November 9, 2018. REUTERS/Altaf Hussain TPX IMAGES OF THE DAY 

Supporters of India's main opposition Congress Party, wearing masks of Prime Minister Narendra Modi, display mock 500 and 1000-rupee banknotes during a protest to mark two years since demonetisation was implemented by Modi, outside the Reserve Bank of India (RBI) building in New Delhi, India, November 9, 2018. REUTERS/Altaf Hussain 

Police detain a supporter of India's main opposition Congress Party during a protest to mark two years since demonetisation was implemented by Prime Minister Narendra Modi, outside the Reserve Bank of India (RBI) building in New Delhi, India, November 9, 2018. REUTERS/Altaf Hussain 

A police officer tries to detain a supporter of India's main opposition Congress party as others shout slogans, during a protest to mark two years since demonetisation was implemented by Prime Minister Narendra Modi, outside the Reserve Bank of India (RBI) building in New Delhi, India, November 9, 2018. REUTERS/Altaf Hussain 

A supporter of India's main opposition Congress Party shouts slogans as he is detained by police during a protest to mark two years since demonetisation was implemented by Prime Minister Narendra Modi, outside the Reserve Bank of India (RBI) building in New Delhi, India, November 9, 2018. REUTERS/Altaf Hussain 

Police detain a supporter of India's main opposition Congress Party during a protest to mark two years since demonetisation was implemented by Prime Minister Narendra Modi, outside the Reserve Bank of India (RBI) building in New Delhi, India, November 9, 2018. REUTERS/Altaf Hussain 

The Reserve Bank of India (RBI) Governor Urjit Patel arrives to attend a news conference after a monetary policy review in Mumbai, India, October 5, 2018. REUTERS/Francis Mascarenhas 

A guard stands next to the Reserve Bank of India (RBI) logo outside its headquarters in Mumbai, India, October 5, 2018. REUTERS/Francis Mascarenhas 

An employee walks behind the Reserve Bank of India (RBI) logo inside its headquarters in Mumbai, India, October 5, 2018. REUTERS/Francis Mascarenhas 

Reserve Bank of India (RBI) Deputy Governor N S Vishwanathan speaks at a banking conference in Mumbai, India, August 20, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after a monetary policy review in Mumbai, India, August 1, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Governor Urjit Patel arrives to attend a news conference after a monetary policy review in Mumbai, India, August 1, 2018. REUTERS/Francis Mascarenhas 

A security guard stands next to the logo of Reserve Bank of India (RBI) inside its headquarters in Mumbai, India, June 6, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Governor Urjit Patel arrives to attend a news conference after a monetary policy review in Mumbai, India, June 6, 2018. REUTERS/Francis Mascarenhas 

FILE PHOTO: A man checks his phone outside the Reserve Bank of India (RBI) headquarters in Mumbai, India April 5, 2018. REUTERS/Francis Mascarenhas/File Photo 

The Reserve Bank of India (RBI) Governor Urjit Patel arrives to attend a news conference after a monetary policy review in Mumbai, India, April 5, 2018. REUTERS/Francis Mascarenhas 

A man checks his phone outside the Reserve Bank of India (RBI) headquarters in Mumbai, India, April 5, 2018. REUTERS/Francis Mascarenhas 

The Reserve Bank of India (RBI) Governor Urjit Patel is seen on the monitor of a makeshift news studio as he speaks during a news conference after the bi-monthly monetary policy review in Mumbai, India February 7, 2018. REUTERS/Danish Siddiqui 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after the bi-monthly monetary policy review in Mumbai, India February 7, 2018. REUTERS/Danish Siddiqui 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after the bi-monthly monetary policy review in Mumbai, India February 7, 2018. REUTERS/Danish Siddiqui 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after the bi-monthly monetary policy review in Mumbai, India, December 6, 2017. REUTERS/Shailesh Andrade 

A woman walks past the Reserve Bank of India (RBI) head office in Mumbai, India, December 6, 2017. REUTERS/Shailesh Andrade 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after the bi-monthly monetary policy review in Mumbai, India, October 4, 2017. REUTERS/Shailesh Andrade 

A man speaks on his mobile phone outside the Reserve Bank of India (RBI) headquarters in Mumbai, India October 4, 2017. REUTERS/Shailesh Andrade 

India’s former Reserve Bank of India (RBI) Governor Raghuram Rajan, gestures during an interview with Reuters in New Delhi, India September 7, 2017. REUTERS/Adnan Abidi 

India’s former Reserve Bank of India (RBI) Governor Raghuram Rajan, listens to a question during an interview with Reuters in New Delhi, India September 7, 2017. REUTERS/Adnan Abidi 

A security personnel member stands guard at the entrance of the Reserve Bank of India (RBI) headquarters in Mumbai, India, August 2, 2017. Picture taken August 2, 2017. REUTERS/Shailesh Andrade 

A man reacts to the camera as he walks past the Reserve Bank of India (RBI) headquarters in Mumbai, India, August 2, 2017. REUTERS/Shailesh Andrade 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after the bi-monthly monetary policy review in Mumbai, India, August 2, 2017. REUTERS/Shailesh Andrade 

Security personnel stand guard at the entrance of the Reserve Bank of India (RBI) headquarters in Mumbai, India, August 2, 2017. REUTERS/Shailesh Andrade 

People walk past a barricade inside the Reserve Bank of India (RBI) headquarters in Mumbai, India June 7, 2017. REUTERS/Shailesh Andrade 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after the bi-monthly monetary policy review in Mumbai, India June 7, 2017. REUTERS/Shailesh Andrade 

A man checks his phone outside the Reserve Bank of India (RBI) headquarters in Mumbai, India June 7, 2017. REUTERS/Shailesh Andrade 

A Reserve Bank of India (RBI) logo is seen at the entrance gate of tts headquarters in Mumbai, India June 7, 2017. REUTERS/Shailesh Andrade 

William Dudley (2-R), President of the New York Federal Reserve Bank, poses with a bronze replica of a bull, during his visit to the Bombay Stock Exchange (BSE) in Mumbai, India May 11, 2017. REUTERS/Shailesh Andrade 

William Dudley, President of the New York Federal Reserve Bank, answers a question, after addressing the Indian businessmen at the Bombay Stock Exchange (BSE) in Mumbai, India May 11, 2017. REUTERS/Shailesh Andrade 

William Dudley, President and CEO of the New York Federal Reserve Bank, addresses the Indian businessmen at the Bombay Stock Exchange (BSE) in Mumbai, India, May 11, 2017. REUTERS/Shailesh Andrade 

The Reserve Bank of India (RBI) Governor Urjit Patel attends a news conference after the bi-monthly monetary policy review in Mumbai, India April 6, 2017. REUTERS/Shailesh Andrade 

Reserve Bank of India (RBI) deputy governor B.P.Kanungo speaks at the UK-India Fintech Conference in Mumbai, India, April 5, 2017. REUTERS/Shailesh Andrade 

FILE PHOTO: The Reserve Bank of India (RBI) seal is pictured on a gate outside the RBI headquarters in Mumbai, India, February 2, 2016. REUTERS/Danish Siddiqui/File photo 

Police use a water cannon to disperse demonstrators during a protest organized by India's main opposition Congress party against demonetisation, outside Reserve Bank of India (RBI) in Chandigarh, India, January 18, 2017. REUTERS/Ajay Verma 

People react as they are detained by police during a protest organised by India's main opposition Congress party against demonetization, outside a Reserve Bank of India office in Ahmedabad, India, January 18, 2017. REUTERS/Amit Dave