This topic is of interest for me. I think it is very useful to present this information in a graph form. I am very visual, so I always look for visual representations of data. Seeing the distribution of the market and Bitcoin´s place in it the way you present it here helps to remind us how new this thing is and how small and pretty much unknown it remains.
I would like for you to site the source of your data points. That makes your writing more credible and gives me the opportunity to look further into it, if I feel like it.