Only five sports have been contested at every summer Olympic Games since 1896:
In 2012 there were 26 sports contested, and in 2016 there was 28, and 33 are scheduled for 2020 (see list).
Figure skating was first contested as an Olympic sport at the 1908 Summer Olympics in London. There were 5 events: Mens & Ladies singles, Special figures, Mixed pairs, and Ice Dancing. Which country won the most medals (6)?