I Finally managed to get the historical data of Bitcoin from the times it was worth only 5 cents, until today!
I also found a way to display the data in logarithmic format.
These are the long term trendlines that emerged
Bitcoin traders like having Fun. So it appears to be that Bitcoin reached its value of 10 cents on 2010.10.10 :-) (first green vertical)
In early 2011 it made its first real bull run, towards the 30$ level, and then fell back, beginning the typical Bitcoin moves.
The average steepness of the Bitcoin price curve seems to decline in time, becoming more flat over the years.
This could mean that big multiplications in value wil take longer and longer in time.