I knew about the boycotts and the USSR -- but not the large early domination of host country, Sweden's early strong showings, and that as late as 1964 the divided Germanies were still competing as one (which didn't return until 1992).

So a great infographic -- visually interesting and informative.

It would be great to see other statistics animated the same way -- GDP and per capita GDP would be especially interesting, given the last ~30 years of 1.5 billion people moving out of poverty and the rise of China and India.