Which years were the olypics canceled?

1916 Summer Olympics in Berlin, Germany - CANCELED DUE TO WORLD WAR I

1940 Summer Olympics in Tokyo, Japan - CANCELED DUE TO WORLD WAR II

1940 Winter Olympics in Sapporo, Japan - CANCELED DUE TO WORLD WAR II

1944 Summer Olympics in London, England - CANCELED DUR TO WORLD WAR II

1944 Winter Olympics in Cortina d'Ampezzo, Italy - CANCELED DUE TO WORLD WAR II