Products Fund Stats & Prices Short-Term Bond Comparison

Short-Term Bond Comparison

Select a Share Class   A,B,CAdministratorInstitutionalInvestorR4R6Service

TAXABLE FUNDS - as of 04-30-2013
	Share Class Ticker 30-Day SEC Yield Credit Quality Duration Net Expense Ratio
Adjustable Rate Government Fund	A ESAAX 0.82 N/A 0.88       0.75%
Core Bond Fund (formerly Total Return Bond)	A MBFAX 1.31 N/A 4.84       0.78%
Emerging Markets Local Bond Fund	A WLBAX 3.51 N/A 4.52       1.23%
Government Securities Fund	A SGVDX 0.97 N/A 3.95       0.90%
High Income Fund	A SHBAX 3.83 N/A 4.09       0.91%
High Yield Bond Fund	A EKHAX 3.69 N/A 5.33       1.03%
Income Plus Fund	A STYAX 1.61 N/A 4.94       0.90%
Inflation-Protected Bond Fund	A IPBAX 6.97 N/A 4.94       0.85%
International Bond Fund	A ESIYX 2.27 N/A 5.67       1.03%
Short Duration Government Bond Fund	A MSDAX 0.39 N/A 1.76       0.79%
Short-Term Bond Fund	A SSTVX 0.60 N/A 1.83       0.81%
Short-Term High Yield Bond Fund	A SSTHX 2.17 N/A 1.80       0.82%
Strategic Income Fund	A WSIAX 3.77 N/A 2.45       0.90%
Ultra Short-Term Income Fund	A SADAX 0.81 N/A 0.48       0.72%

TAX-FREE FUNDS - as of 04-30-2013
	Share Class Ticker 30-Day SEC Yield Credit Quality Duration Net Expense Ratio
Absolute Return Fund	A WARAX null       1.69%
California Limited-Term Tax-Free Fund	A SFCIX 0.91 N/A 2.54       0.81%
California Tax-Free Fund	A SCTAX 1.99 N/A 6.62       0.75%
Colorado Tax-Free Fund	A NWCOX 1.63 N/A 6.72       0.86%
Emerging Markets Equity Income Fund	A EQIAX null       1.65%
High Yield Municipal Bond Fund	A WHYMX 3.12 N/A 7.27       0.85%
Intermediate Tax/AMT-Free Fund	A WFTAX 1.24 N/A 4.61       0.70%
Minnesota Tax-Free Fund	A NMTFX 1.32 N/A 5.38       0.85%
Municipal Bond Fund	A WMFAX 1.70 N/A 4.92       0.75%
Municipal Money Market Fund	A WMUXX null       0.65%
North Carolina Tax-Free Fund	A ENCMX 1.72 N/A 5.47       0.85%
Pennsylvania Tax-Free Fund	A EKVAX 2.31 N/A 6.57       0.74%
Short-Term Municipal Bond Fund	A WSMAX 0.33 N/A 0.90       0.60%
Strategic Municipal Bond Fund	A VMPAX 0.66 N/A 1.52       0.82%
Ultra Short-Term Municipal Income Fund	A SMAVX 0.06 N/A 0.36       0.67%
Wisconsin Tax-Free Fund	A WWTFX 1.31 N/A 4.62       0.70%

Figures quoted represent past performance, which is no guarantee of future results. Investment return, principal value and yields of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Performance shown without sales charges would be lower if sales charges were reflected. Current performance may be lower or higher than the performance data quoted and assumes the reinvestment of dividends and capital gains. Current month-end performance is available here.

For Class A shares, the maximum front-end sales charge is 4.50%. For Class B shares, the maximum contingent deferred sales charge is 5.00%. For Class C shares, the maximum contingent deferred sales charge is 1.00%. Performance including sales charge assumes the sales charge for the corresponding time period. Administrator, Institutional, Investor, Retirement and Service Class shares are sold without a front-end sales charge or contingent deferred sales charge.

Investing in all mutual funds entails risk. Information about the risks of investing in a fund is available in the fund's prospectus.