Over the period of nearly two centuries, between 1631 and 1828, their membership had decreased to 1,010.
By 2011, membership had decreased to about 1,200.
After a while membership decreased and the church closed.
Like other mainline churches in the United States, its membership decreased from the 1960s.
Historically, the Convention grew throughout its history until 2007, when membership decreased by a net figure of nearly 40,000 members.
Due to persecution by employers, the media, government and even other unions, membership decreased.
This was not popular with fans who drifted away from the club, and its membership and support base decreased rapidly.
At the same time, its membership slowly decreased, and by the 1930s the party had lost much of its former influence.
Over eight years it grew by four churches, but membership decreased to 1,250.
From 2005 to 2006 total memberships decreased from 30,027 to 26,429 and the average home crowd fell from 33,101 to 28,305.