The price of any commodity (let’s say here Bitcoins) increases, when the demand of the good increases. Basically it works on the demand and supply theory. If the supply is low and demand is high, then eventually in order to fulfil the demand, the price will increase. In case of Bitcoins the supply is not only low but also limited, that is , already a fixed amount of Bitcoins present, no more Bitcoins can be created. So the price will definitely grow. When the demand will increase, this will lead to the rise of the price and we will see this very soon.