Data Research
by Leniolabs_

Pole vault olympic records

Evolution of pole materials

189018962.53.03.54.04.55.05.56.06.5Olympic record (meters)Olympic year190419081912192019281936193219561964197219881996200420122020196019681980197620082016Solid wood and bamboo polesMetal polesGlass and carbon fibre poles

Sources: Materials and technology in sport. Mike Caine, Kim Blair and Mike Vasquez. NATURE MATERIALS | VOL 11 | AUGUST 2012 and Evolution of the Pole Vault Olympic Record! | Top Moments

Olympic medals per country by year

Top countries with olympic medals

Athens, Greece - 1896
Gold MedalsSilver MedalsBronze MedalsGREUSAGERFRAGBRDENHUNAUTZZXSUIAUSCOUNTRY02505007501000125015001750200022502500

1948: Germany and Japan were not invited to participate in the games. Source link.

1980: USA and Japan were part of the boycott to protest against the Soviet invasion of Afghanistan. Source link.

1984: Russia and Poland were part of the boycott claiming 'chauvinistic sentiments and an anti-Soviet hysteria being whipped up in the United States. Source link.

Sources: Summer_Olympics_medal_table at Wikipedia.