Milan beats Izmir by 86 to 65

So the Last time it was in 1906.

List of official world expositions according to the Bureau International des Expositions

1851 London (United Kingdom) *1855 Paris (France) *1862 London (United Kingdom) *1867 Paris (France) *1873 Vienna (Austria) *1876 Philadelphia (United States) *1878 Paris (France) *1879 Sydney (Australia) *1880 Melbourne (Australia) *1884 New Orleans (United States) * 1888 Barcelona (Spain) * 1889 Paris (France) * 1893 Chicago (United States) * 1896 Nizhny Novgorod (Russia) * 1896 Budapest (Hungary) * 1897 Brussels and Stockholm (Sweden) * 1900 Paris (France) * 1901 Charleston (United States) * 1904 St. Louis (United States)* 1905 Liège (Belgium)* 1906 Milan (Italy) * 1910 Brussels (Belgium) * 1911 Turin (Italy) * 1913 Ghent (Belgium) * 1914 Lyon (France) * 1915 San Francisco (United States) * 1915 San Diego (United States) * 1929 Barcelona (Spain) * 1933 Chicago (United States) * 1937 Paris (France) * 1939 New York City (United States) * 1939-1940 San Francisco (United States) * 1958 Brussels (Belgium) * 1960 Seattle (United States) * 1962 Seattle (United States)* 1964 New York (United States) * 1967 Montreal (Canada) * 1968 San Antonio (United States) * 1970 Osaka (Japan)* 1974 Spokane (United States) * 1982 Knoxville (United States) * 1984 New Orleans (United States)* 1985 Tsukuba (Japan) * 1986 Vancouver (Canada) * 1988 Brisbane (Australia)* 1990 Osaka (Japan)* 1992 Seville (Spain) * 1993 Daejeon (South Korea) * 1998 Lisbon (Portugal) * 2000 Hanover (Germany)* 2005 Aichi (Japan) * 2008 Zaragoza (Spain)* 2010 Shanghai (China) * 2015 Milan (Italy).