Average Annual Total Returns [further-information] As of 03/31/2019

Month EndAs of 05/31/2019 1 Yr 3 Yr 5 Yr 10 Yr Since Inception Inception 09/01/1987
Fund without Sales Charge (%) (NAV) 5.08 2.43 2.86 4.08 5.34
Fund with Sales Charge (%) (POP) 5.08 2.43 2.86 4.08 5.34
Bloomberg Barclays Municipal Bond Index (%) 6.40 2.97 3.58 4.58 5.94
Quarter EndAs of 03/31/2019 1 Yr 3 Yr 5 Yr 10 Yr Since Inception Inception 09/01/1987
Fund without Sales Charge (%) (NAV) 4.00 2.21 3.10 4.27 5.32
Fund with Sales Charge (%) (POP) 4.00 2.21 3.10 4.27 5.32
Bloomberg Barclays Municipal Bond Index (%) 5.38 2.71 3.73 4.72 5.91

Calendar Year Returns

2018 2017
Fund without Sales Charge (%) (NAV) 0.67 3.17
Fund with Sales Charge (%) (POP) 0.67 3.17
Bloomberg Barclays Municipal Bond Index (%) 1.28 5.45

Cumulative Total Returns [further-information] As of 03/31/2019

Month EndAs of 05/31/2019 YTD 1 Yr 3 Yr 5 Yr 10 Yr Since Inception since 09/01/1987
Fund without Sales Charge (%) (NAV) 4.09 5.08 7.46 15.13 49.16 421.99
Fund with Sales Charge (%) (POP) 4.09 5.08 7.46 15.13 49.16 421.99
Bloomberg Barclays Municipal Bond Index (%) 4.71 6.40 9.16 19.25 56.53 523.69
Quarter EndAs of 03/31/2019 YTD 1 Yr 3 Yr 5 Yr 10 Yr Since Inception since 09/01/1987
Fund without Sales Charge (%) (NAV) 2.46 4.00 6.76 16.51 51.98 413.85
Fund with Sales Charge (%) (POP) 2.46 4.00 6.76 16.51 51.98 413.85
Bloomberg Barclays Municipal Bond Index (%) 2.90 5.38 8.35 20.12 58.55 512.90

After-Tax Average Annual Total Returns [further-information] As of 03/31/2019

Month EndAs of 05/31/2019 1 YR 3 YR 5 YR 10 YR
Fund without Sales Charge (%) (NAV) Before Shares Sold 5.08 2.43 2.86 4.08
Fund without Sales Charge (%) (NAV) After Shares Sold 4.38 2.64 3.01 4.05
Fund with Sales Charge (%) (POP) Before Shares Sold 5.08 2.43 2.86 4.08
Fund with Sales Charge (%) (POP) After Shares Sold 4.38 2.64 3.01 4.05
Quarter EndAs of 03/31/2019 1 YR 3 YR 5 YR 10 YR
Fund without Sales Charge (%) (NAV) Before Shares Sold 4.00 2.21 3.10 4.27
Fund without Sales Charge (%) (NAV) After Shares Sold 3.68 2.47 3.21 4.22
Fund with Sales Charge (%) (POP) Before Shares Sold 4.00 2.21 3.10 4.27
Fund with Sales Charge (%) (POP) After Shares Sold 3.68 2.47 3.21 4.22

SALES CHARGE, EXPENSES & FEES As of 09/10/2018 (updated annually)

Gross Expense Ratio 0.65%
Net Expense Ratio [further-information] 0.62%
Max Initial Sales Charge 0.00%
CDSC

Volatility Measures [further-information] As of 05/31/2019 Updated Monthly, based on a 3-year period

Beta 0.73
Sharpe Ratio 0.42
Standard Deviation 2.66

Benchmarks

A benchmark is a comparable broad-based index that can be used to evaluate a fund's performance.

  • Bloomberg Barclays Municipal Bond Index

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