A man (R) cleans electronic boards showing Japan's Nikkei average, the exchange rate between the Japanese yen against the U.S. dollar and stock quotation outside a brokerage in Tokyo, Japan, in this April 6, 2016 file photo. REUTERS/Issei Kato/Files

Ireland's Paul McGinley during the Pro-Am. Golf - BMW PGA Championship - Virginia Water, Surrey, England - 20/5/15. Action Images via Reuters / Andrew Boyers Livepic

The famous skyline with its banking district is pictured in Frankfurt early evening April 13, 2015. REUTERS/Kai Pfaffenbach

Indonesian Finance Minister Sri Mulyani Indrawati gestures during an interview with Reuters at Finance Ministry office in Jakarta, Indonesia, August 19, 2016. REUTERS/Beawiharta

The European Union flag is seen flying, at the border of Gibraltar with Spain, in the British overseas territory of Gibraltar, historically claimed by Spain, June 27, 2016, after Britain voted to leave the European Union in the EU Brexit referendum. REUTERS/Jon Nazca

A man walks on a bridge in the financial district of Pudong in Shanghai, China June 22, 2016. REUTERS/Aly Song

The logo of Dow Jones Industrial Average stock market index listed company JPMorgan Chase (JPM) is seen in Los Angeles, California, United States, in this October 12, 2010 file photo. REUTERS/Lucy Nicholson/File Photo

A worker arrives at his office in the Canary Wharf business district in London, Britain February 26, 2014. REUTERS/Eddie Keogh/File Photo