One reason for it is that the Fed stopped publishing M3 money supply figures in 2006. This was no small turn of events, since it coincided with the move by the U.S. government to ship large quantities of raw U.S. cash to the Middle East to help finance our military operations over there. We still have no idea how much unreported cash is floating around out there.
I agree Bush Jr did no less harm to America than Obama. In fact he literally gave us Obama.