Quarter-end Performace
Average Annual Total Returns
(as of 6/30/09)

	Institutional
1 Month	1.17%
3 Month	1.88%
Year-to-Date	-0.62%
1 Year	5.77%
3 Year	3.52%
5 Year	4.86%
10 Year	6.37%
Inception (7/15/98)	6.24%
Expense Ratio (Gross)1	0.61%
Expense Ratio (Net)2	0.57%

Month-end Performace
Average Annual Total Returns
(as of 8/31/09)

	Institutional
1 Month	1.24%
3 Month	5.02%
Year-to-Date	3.17%
1 Year	7.81%
3 Year	3.93%
5 Year	5.21%
10 Year	6.84%
Inception (7/15/98)	6.50%
Expense Ratio (Gross)1	0.64%
Expense Ratio (Net)2	0.60%

The performance shown represents past performance. Past performance is no guarantee of future results and current performance may be higher or lower than the performance shown above. Principal value and investment returns will fluctuate, and investors' shares, when redeemed, may be worth more or less than the original cost. Calculations include reinvestment of dividends and capital gain distribution. Returns for periods less than one year are cumulative. Performance does not reflect trade date adjustment made to the NAV at the month end. Net performance would have been lower if fees had not been waived in various periods.

¹Gross expenses are the Fund's total annual operating expenses for the share class(es) indicated as of the date of the Fund's most current prospectus and do not reflect fee waivers or reimbursements. These expenses include management fees, 12b-1 distribution and service fees, and other expenses. In periods of market volatility, assets may decline significantly, causing total annual fund operating expenses to become higher than the numbers shown in the table above.

²Net expenses are the Fund's total annual operating expenses for the share class indicated as of the date of the Fund's most current prospectus. The Fund's Manager has contractually agreed to waive fees and/or reimburse operating expenses of 0.04% through April 30, 2010.