This dataset shows the five year attendance records and arena capacities for all 11 teams in the NHL Expansion Era.

In 1991, the San Jose Sharks entered the NHL bringing the total number of teams to 22.
30 years later in 2021, the Seattle Kraken entered the NHL bringing the total number of teams to 32.

This dataset shows the growths and recessions of those 11 teams in their first five seasons, regardless of on-ice performance.