central bank gold-buying increases by 500%, page-7

Gold touched $2000 in aug or sept 2011, (sorry have extremly slow internet but i'm sure you know when i'm talking about) Since then it has fallen and traded sideways.
If we Forget all fundamentals all charts or what ever. The reason if fell was because more was sold then bought. demand dropped. So the price dropped?? If the same demand was there the price would of continued to climb.
Nectar you have a link that says the central banks increased there buying by 500% in 2011. Yet towards the end of 2011 the price reached a peak and dropped.
Someone sold, who was it???