Which means that you had less than 4005 season ticket holders that season-you could have ground shared with Sutton United. Maybe if you had done so you wouldn't have needed 2 administrations to stay afloat.
Just in case you have signatures turned off:
51,700 v Burnley last game in 1978/79. 4,005 v Wimbledon in 1984. Same division. I think this shows the real plastics.