Just one more thing...

One more bit of data extracted from the big wallets list... I ran a script to track the build'up of value over time in the "savings" addresses. So here is the graph... Savings as they increase over time. Notice the total climbs up towards 10 million coins (worth around $6bn at market rates) - as I said before, 78% of bitcoin is in savings accounts.

A few noticeable features: 

• Ongoing increase of savings over time
• Rapid saving from the off. This is a period when coins were mined by a few individuals for a couple of years and stockpiled in 50 coin blocks (see previous post). Presumably there was almost no spending at this time.
• Some peaks in saving rate. This may be the times when bitcoin boomed. See the steepest rate is at the end of the line - corresponding with the massive surge of interest.