Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
8/31/2015	$22.90	$22.92	$22.91	1,464,676	$978,652,709
8/28/2015	$23.06	$23.08	$23.07	282,654	$992,320,237
8/27/2015	$23.07	$23.09	$23.09	797,417	$992,714,335
8/26/2015	$22.55	$22.57	$22.56	685,886	$975,051,934
8/25/2015	$21.93	$21.96	$21.93	2,795,440	$964,186,963
8/24/2015	$22.24	$22.24	$22.23	2,502,677	$985,104,899
8/21/2015	$23.28	$23.26	$23.28	976,339	$1,021,196,616
8/20/2015	$23.88	$23.88	$23.88	267,919	$1,044,554,104
8/19/2015	$24.34	$24.34	$24.34	299,378	$1,064,896,821
8/18/2015	$24.55	$24.55	$24.56	239,428	$1,074,039,752
8/17/2015	$24.56	$24.56	$24.56	720,291	$1,074,657,626
8/14/2015	$24.49	$24.48	$24.48	636,564	$1,073,647,747
8/13/2015	$24.31	$24.32	$24.32	249,608	$1,070,018,844
8/12/2015	$24.25	$24.26	$24.26	386,321	$1,067,394,803
8/11/2015	$24.39	$24.39	$24.41	698,432	$1,073,352,767
8/10/2015	$24.56	$24.57	$24.57	251,107	$1,089,575,214
8/7/2015	$24.34	$24.34	$24.34	258,063	$1,079,346,350
8/6/2015	$24.33	$24.33	$24.33	638,773	$1,079,018,284
8/5/2015	$24.50	$24.49	$24.50	212,803	$1,076,232,784
8/4/2015	$24.45	$24.46	$24.46	1,269,031	$1,075,128,594
8/3/2015	$24.48	$24.49	$24.49	1,934,875	$1,056,817,090