Yields on top-rated muni bonds strike new lows,

SAN FRANCISCO Thu Nov 15, 2012 3:23pm EST

SAN FRANCISCO Nov 15 (Reuters) - Benchmark yields on tax-free U.S. municipal bonds fell to new lows on Thursday as investors concerned about the outlook for tax hikes and nervous about the stock market snapped up the debt.

The 30-year yield fell to an all-time low for a sixth consecutive session, dropping five basis points from Wednesday's low to end at 2.55 percent on Municipal Market Data's benchmark triple-A scale.

The 10-year yield dropped three basis points, to a record low 1.51 percent.

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After wave of QE, onus shifts to leaders to boost economy

DAVOS, Switzerland - Central banks have done their best to rescue the world economy by printing money and politicians must now act fast to enact structural reforms and pro-investment policies to boost growth, central bankers said on Saturday.