From the passage provided, extract the number of casualties by nation during World War II

According to Russian government figures, USSR losses within postwar borders now stand at 26.6 million,[3][4] including 8 to 9 million due to famine and disease.[4][5][2] In August 2009 the Polish Institute of National Remembrance (IPN) researchers estimated Poland's dead at between 5.6 and 5.8 million.[6] Historian Rüdiger Overmans of the Military History Research Office (Germany) published a study in 2000 that estimated the German military dead and missing at 5.3 million, including 900,000 men conscripted from outside of Germany's 1937 borders, in Austria, and in east-central Europe.[7][8] The Red Army claimed responsibility for the majority of Wehrmacht casualties during World War II.[9] The People's Republic of China puts its war dead at 20 million,[10] while the Japanese government puts its casualties due to the war at 3.1 million.

USSR - 26.6 million
Poland - 5.8 million
Germany - 5.3 million
China - 20 million
Japan - 3.1 million