History of organizational changes in the NHL
The NHL added the Columbus Blue Jackets and the Minnesota Wild for the 2000-01 NHL season, bringing the number of teams to thirty. This was the number of teams there were for 17 seasons. The Mighty Ducks of Anaheim changed their name to the Anaheim Ducks in the 2006-07 NHL season. Then, the Atlanta Thrashers moved to Winnipeg to become the Jets in the 2011-12 NHL season. Finally, the Phoenix Coyotes changed their name to the Arizona Coyotes in the 2014-15 NHL season.