Click through to see a real-time version of the chart, created with RStudio's Shiny by Ty Henkaline. (By the way, does anyone know if it's possible to embed a live version of the chart in a blog post like this?) If you're looking to create similar real-time charts of Web-based tables, be sure to check out the underlying code by Tyler Rinker that grabs the medal table from the Sochi website, cleans up the data, and plots the medal tally as a chart.
[Updated: The interactive chart by Ty Henkaline was mistakenly attributed to Ramnath Vaidyanathan. Apologies for the error.]
TRinker's R Blog: Sochi Olympic Medals