It will almost definitely increase. Demand is only going up as technologies progress and computers use gold in chipsets, and as emerging markets grow and more of the upper classes in those markets want to buy more gold. More importantly, though, it is getting harder and harder to mine gold as deposits closer to the surface start to run out. Of course, companies are developing technologies for deeper mining as well as deep sea mining, but those will take at least a few years. Until then at least, growth will continue.