The 2012-2013 season will mark the 30th anniversary for the organization.
Next September will mark his 40th anniversary with the company.
It was created to mark the 350th anniversary of the city.
There will also be special events through the summer to mark the anniversary.
A full history of the club was published to mark its 175th anniversary in 2007.
This event will mark its 37th anniversary in May 2013.
All major party heads take the day off to mark the anniversary.
They were established in 2001 to mark the 10th anniversary of the association.
The points competition began in 1953, to mark the 50th anniversary.
The 2011 event will mark the 80th anniversary of the conference.