The Olympics are organized by a hierarchy of sports, disciplines and events. A sport is added to the Olympic program if it’s deemed widely practiced (according to the number of countries taking part, with different, more stringents requirements for men VS women and winter VS summer games).
Looking at the summer games, we want to see how the number of events per discipline evolves over time,
with some remaining quite stable, whereas other more popular sports see considerable evolutions.
Select the sport you’re interested in from the legend on the right to include it in the graph!