We use 1913 as the starting date instead of 1917 when the Russian Revolution occurred. Some capitalist historians think it is fair not to blame the capitalist system for the deaths of World War I and 1913 was the last year before World War I.

In 1924 Lenin died and Stalin came to power in the USSR. In 1953 Stalin died. Khruschev denounced Stalin in 1956 in his "secret speech." It's been downhill to capitalism ever since in the USSR.

Year	USSR infant deaths per 1000	USA infant deaths per 1000
1913	273	99.9
1940	184	47.0
1950	81	29.2
1953	68	27.8
1956	47	26.0

Source: John F. Kantner, "Basic Demographic Comparisons Between the USSR and the United States," (1959)...paper submitted to the Subcommittee on Economic Statistics of the Joint Economic Committee, Eighty-sixth Congress, First Session, Washington, DC. in Alex Inkeles & Kent Geiger, eds. Soviet Society: A Book of Readings (Boston: Houghton Mifflin Co., 1961), p. 18.