Take at look at the stats that Ultimate A-League have, we currently have the lowest average attendance figure across the league. However, the only reason the Heart are ahead of us is because of the Melbourne Derby, and if you take that outlier out they have a lower attendance than us. http://www.ultimatealeague.com/records.php?type=att
Overall our crowd sizes are following the trend of the league as a whole, quite high in the first couple of seasons, then dropped away but are slowly increasing back to the size of the first few seasons again.
Also CCM if you take out the bumper New Years Eve Crowd aren't much higher either.