Net Asset Value (NAV) as of 09-07-2010 – Share Class Investor
NAV	$9.71
$ Change	$-0.01
% Change	-0.10%

Cumulative & Annualized Total Returns – Share Class Investor
					Annualized Total Returns
Performance Type		Last 3 Months		Year To Date		1-Year		3-Year		5-Year		10-Year		Since Inception
NAV as of 07-31-2010		1.56%		4.86%		13.31%		5.25%		4.79%		5.66%		5.63%
NAV as of 06-30-2010		1.68%		3.84%		14.23%		5.07%		4.57%		5.60%		5.61%
Figures quoted represent past performance, which is no guarantee of future results. Investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance data quoted. Net asset value (NAV) is the value of one share of the fund excluding any sales charges. Returns for periods of less than one year are not annualized. Investor Class shares are sold without a front-end sales charge or contingent deferred sales charge. A portion of the Fund's income may be subject to federal, state and/or local income taxes or the alternative minimum tax (AMT).

Expenses – Share Class Investor
Net Expense Ratio effective since 11-01-2009	0.80%
Gross Expense Ratio	0.94%
The adviser has committed to waive fees and/or reimburse expenses to maintain the Fund's net expense ratio as shown, excluding acquired fund fees. The contractual waiver end date for class A, B, C, Administrator, and Institutional is 7-11-2013 and for Investor Class shares is 10-31-2010. Without these reductions, the Fund's returns would have been lower, and the rankings and ratings may have been lower.

Commissions & Breakpoints  (Excludes no-load share classes.) Click here to view

Morningstar Rating 1 – Share Class Investor		Lipper Total Return Rankings – Share Class Investor
Based on risk-adjusted returns as of 07-31-2010 Category Muni National Long Overall (out of 253 funds) 3-Year (out of 253 funds) 5-Year (out of 232 funds) 10-Year (out of 199 funds) The Overall Morningstar Rating for a fund is derived from a weighted-average of the performance figures associated with its three-, five- and ten-year (if applicable) ratings.		as of 07-31-2010 Category Lipper General Municipal Debt Funds 1 - Year 32 out of 248 3 - Year 26 out of 209 5 - Year 9 out of 195 10 - Year 2 out of 155 Lipper rankings do not include the effects of sales charges. Past performance is no guarantee of future results.

Benchmark Returns2 as of 07-31-2010

Average Annual Total Returns

Performance Type

Last 3 Months

Year To Date

1-Year

3-Year

5-Year

10-Year

Lipper General Municipal Debt Funds Average

1.63%

4.21%

10.12%

3.61%

3.34%

4.48%

Calendar Year Returns – Share Class Investor

Does not include sales charges, and assumes reinvestment of dividends and capital gains.

Fund Yield Summary 3,4,5 as of 09-07-2010 – Share Class Investor

7-Day

7-Day Current

7-Day

30-Day

30-Day

Daily Factor

1-Day

Current

Unsubsidized

Effective

Current

Effective

0.00102539

3.85%

3.88%

3.85%

3.96%

3.84%

3.90%

Taxable Equivalent Yield by Federal Tax Rate as of 07-31-2010 – Share Class Investor
10%	15%	25%	28%	33%	35%
4.01%	4.25%	4.81%	5.01%	5.39%	5.55%

Fund Distribution 6 as of 07-31-2010 – Share Class Investor
30-day SEC Yield		30-Day Taxable Equivalent Yield
3.61%		5.55%

1 For each fund with at least a three-year history, Morningstar calculates a Morningstar Rating™ based on a Morningstar Risk-Adjusted Return measure that accounts for variation in a fund's monthly performance (including the effects of sales charges, loads, and redemption fees), placing more emphasis on downward variations and rewarding consistent performance. The top 10% of funds in each category receive 5 stars, the next 22.5% receive 4 stars, the next 35% receive 3 stars, the next 22.5% receive 2 stars and the bottom 10% receive 1 star. (Each share class is counted as a fraction of one fund within this scale and rated separately, which may cause slight variations in the distribution percentages.) Past performance is no guarantee of future results.

2 The Lipper General Municipal Debt Funds Average is an average of funds that invest at least 65% of their assets in municipal debt issues in the top four credit ratings. The total return of the Lipper Average does not include the effect of sales charges. You cannot invest directly in a Lipper Average.

3 The daily factor is the interest factor that generates the dividend on a daily basis.

4 The 7-day current yield is an annualized net yield that describes the annualized income earned over a 7-day period. The 30-day current yield is an annualized net yield that describes the annualized income earned over a 30-day period. The current yield calculations assume that the income earned on the principal is not reinvested in the fund. The 7-day effective yield is annualized net yield that describes the amount one is expected to earn over a 1-year period assuming that dividends are reinvested at the average rate of the last 7-days. The 30-day effective yield is an annualized yield that describes the amount that would be earned over a 1-year period if dividends were reinvested at the average rate of the last 30 days.

5 The 7-day current unsubsidized yield does not reflect the effect of any fee or expense waivers made by the Fund's manager.

6 The 30-day SEC yield is calculated with a standardized formula mandated by the SEC. The formula is based on an estimated yield to maturity (assuming all portfolio securities are held to maturity) and is intended to reflect a fund's hypothetical annualized income, as a percentage of its assets. A fund's actual distribution rate will differ from the SEC yield and any income distributions from the fund may be higher or lower than implied by the SEC yield.