interesting that Bournemouth is mentioned. Their average attendance record makes interesting reading
England historical attendance and performance
In recent history then I think it is only the year we were at Sixfields that they have bettered us. Usually they have been well short of the CCFC average. When their really hard times came 1997 & 2009 under 5000 each year.
Fans engagement, which is what is really being queried, is a two sided thing. The engagement at CCFC has been poor for a long time, and you cannot simply lay that at the feet of "fickle" fans. Some will go whatever, others seek a reward from the experience. Success even stature of a club is not necessarily dependent on how many fans go, it is far more complicated than that. Success can be achieved on pretty low fan numbers it would seem
the ccfc numbers are here
England historical attendance and performance