From last week's research piece written by Merrill Lynch Bond Research:
Muni bond funds record the largest weekly inflow in 3 years last week
The Lipper fund flow report showed that a significant $1.822bn flowed into muni mutual funds in the week ended 11/21/2012 that was the largest weekly inflow since 9/30/2009. During the last 52 weeks, municipal bond funds have experienced 49 weeks of inflows.
The tsunami of money into bond funds continues.