Topic summary
Sport shoe

Extracted from the Wikipedia article Sneakers.
History
From 1970 (five models), to 1998 (285 models), to 2012 (3,371), the number of sport shoe models in the U.S. has grown exponentially.
Topic summary

Extracted from the Wikipedia article Sneakers.
From 1970 (five models), to 1998 (285 models), to 2012 (3,371), the number of sport shoe models in the U.S. has grown exponentially.