The Arashi fanclub was started in 2001, 2 years after the group's debut in 1999. After its creation, 90,000 members had joined the official fanclub by its 1st year. Membership began to increase rapidly in 2007. Now the fanclub has reached an important milestone: 1 million members.
Membership through the years:
April 2002 90,000 members
April 2003 110,000 members
April 2004 120,000 members
April 2005 130,000 members
April 2006 150,000 members
April 2007 190,000 members
April 2008 250,000 members
April 2009 400,000 members
April 2010 670,000 members
April 2011 980,000 members
May 2011 1,000,000 members
SOURCE : JPOPASIA