India's Finance Minister Arun Jaitley gestures while giving his closing remarks during the "Advancing Asia: Investing for the Future" conference in New Delhi, India, March 13, 2016. REUTERS/Anindito Mukherjee

Election posters of top candidate of Social Democratic Party (SPD) and Mayor of Berlin Michael Mueller (L) and top candidate of the anti-immigration party Alternative for Germany (AfD) Georg Pazderski for the upcomming local city elections are pictured in Berlin, Germany, September 14, 2016. REUTERS/Fabrizio Bensch/File Photo

Frauke Petry (C), chairwoman of the anti-immigration party Alternative for Germany (AfD), and Leif-Erik Holm (3rd R), Mecklenburg-Vorpommern top candidate talk before a news conference in Berlin, Germany, September 5, 2016. REUTERS/Stefanie Loos

India's Finance Minister Arun Jaitley gestures as he addresses a gathering during a seminar on 'Income Declaration Scheme-2016' in Ahmedabad, India, July 10, 2016. REUTERS/Amit Dave

The Blue Angels perform a fly-over at the start of the graduation and commissioning ceremony at the U.S. Naval Academy in Annapolis, Maryland U.S. May 27, 2016. REUTERS/Kevin Lamarque

A woman with a baby buggy looks at items outside a discount store at a shopping district in Tokyo, Japan, February 25, 2016. REUTERS/Yuya Shino/File Photo

German Chancellor and chairwoman of the Christian Democratic Union (CDU) Angela Merkel addresses supporters during an election campaign rally for local city elections in Berlin, Germany, September 14, 2016. The words read "Strong Berlin". REUTERS/Fabrizio Bensch

Bostjan Jazbec speaks during an interview in Ljubljana December 13, 2013. REUTERS/Srdjan Zivulovic/File photo