Ok, lets look at the graphs again:
- The volume in EUR has risen. Thats not necessarily new because it has always (on average) risen over the last year.
- What's new is the sudden surge over the past 2 weeks. But volume on Mtgox has also gone up for USD in that time, although a bit less
in comparison. If the higher growth rate of EUR volume is not sustained the past two weeks can be discarded as noise as they dont
bring up the mean very much.
- Also please consider that over the past year the EUR lost roughly 16% in value compared to the USD. This effects in a rise of 16% of
EUR volume in your graph.
- Finally the volume of EUR compared to USD is still insignificantly low comparing all the markets
). If last years growth rate for both USD and EUR stays the same (across all markets), I
expect the EUR volume to keep up with USD volume in about 3 years from now. Thats a long time in the bitcoin universe.
My estimations (I didnt calculate very much;):
+ last years
(from the 17th of June 2011 till the 17th of June 2012) average USD growth
(across all markets): 100% (--> it doubled)
+ last years
(from the 17th of June 2011 till the 17th of June 2012) average EUR growth
(across all markets): 300% (--> it quadrupled)