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The Standard & Poor's/Investortools - Water & Sewer Index
October 2011
(Expanded Deletion Criteria)
See Explanation
Cumulative Returns Data

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Period # Of
Cusips		 Total
Return		 Beg. Mkt.
Val (Mil)		 Mkt. Wt.
Coupon 		Mkt. Wt.
Beginning Yield		 Mkt. Wt.
Ending Yield		 Ending Mod
Duration		 Ending Yrs. To
Price Date
October 2011 3,215 -0.429% 68,554 4.975% 3.285% 3.405% 5.04 6.41
One Year History
(Indices and data produced before November 2002 reflect the original limited deletion criteria.)
Period # Of
Cusips		 Total
Return		 Beg. Mkt.
Val (Mil)		 Mkt. Wt.
Coupon 		Mkt. Wt.
Beginning Yield		 Mkt. Wt.
Ending Yield		 Ending Mod
Duration		 Ending Yrs. To
Price Date
Sep 2011 3,184 1.391% 67,061 4.973% 3.457% 3.243% 4.93 6.18
Aug 2011 3,104 2.029% 63,984 4.975% 3.784% 3.446% 5.11 6.63
Jul 2011 3,083 0.908% 63,372 4.983% 3.928% 3.791% 5.64 7.77
Jun 2011 3,025 0.348% 62,857 4.989% 3.925% 3.902% 5.74 8.09
May 2011 3,030 2.036% 62,041 4.991% 4.170% 3.913% 5.86 8.38
Apr 2011 3,011 2.266% 60,393 4.990% 4.428% 4.172% 6.68 10.35
Mar 2011 3,008 -0.366% 61,716 4.990% 4.383% 4.458% 8.47 14.38
Feb 2011 3,017 1.858% 60,852 4.990% 4.582% 4.379% 8.24 13.68
Jan 2011 3,052 -1.104% 61,940 4.990% 4.398% 4.560% 8.93 15.23
Dec 2010 3,060 -2.176% 64,342 4.990% 3.999% 4.397% 8.22 13.53
Nov 2010 3,024 -2.361% 66,115 4.990% 3.495% 3.986% 5.95 8.43
Oct 2010 3,025 -0.482% 66,709 4.990% 3.353% 3.477% 5.16 6.60
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or
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