One thing that has long puzzled me about Czech hockey is the rather peculiar(at least for the traditional hockey powers) age ratio. If you take the countries that you see every year in the World Juniors and calculate the percentage of registered male* players who are under 20 you get: Country%Male players under-20Canada80.3Finland58.9Russia84.7Slovakia78.4Sweden75.5Switzerland56.6United States67.8Czech Republic24.6 Why aren't Czech youth playing hockey anymore(while it remains popular among the older cohorts)? And why is it so different from Slovakia? Are Slovak men less able to continue playing as adults due to costs? *I'm omitting women and girls here because from what I gather the women's game isn't nearly as popular in central Europe as in North America, so I don't want that skewing the ratios.