It is not as significant as you would like people to believe. Look at bitcoin over a period longer than 12-18 months, and given it has only existed for a little over 5 years this is a resonable time frame, and you are talking about it being $50 to $350 with a peak of $1200. So apart from a small period of time (probably 8 weeks maximum) the vast majority of bitcoins have held, or increased, their value.