Average Daily Trading Volume in U.S. Bond Markets (2000-2010) 											
	Calendar Year										
	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010
	Billions of dollars										
Municipal bonds	8.8	8.8	10.7	12.6	14.8	16.9	22.5	25.1	19.4	12.5	13.3
Federal agency securities	72.8	90.2	81.8	81.7	78.8	78.8	74.4	83	104.5	77.7	71.5
Corporate debt	-	-	16.3	18	18.8	16.7	16.9	16.4	11.8	16.8	16.3
Agency mortgage-backed securities	69.5	112	154.5	206	207.4	251.8	254.6	320.1	344.9	299.9	320.6
Treasury securities	206.5	297.9	366.4	433.5	499	554.5	524.7	570.2	553.1	407.9	528.2

Source: Securities Industry and Financial Markets Association (SIFMA).    											
"Notes: The data refers to primary dealer activity for Treasury securities, federal agency securities, and agency mortgage backed securities. "											
"For corporate debt, the data excludes maturities of one year or less and convertible securities.   "