Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
6/29/2018	$31.33	$31.30	$31.32	276,092	$1,186,427,915
6/28/2018	$31.32	$31.32	$31.32	92,511	$1,180,872,711
6/27/2018	$31.12	$31.10	$31.11	110,497	$1,172,389,803
6/26/2018	$31.53	$31.53	$31.53	92,562	$1,188,596,197
6/25/2018	$31.70	$31.65	$31.67	83,751	$1,193,370,706
6/22/2018	$32.01	$32.00	$32.00	62,690	$1,206,586,501
6/21/2018	$32.01	$32.01	$32.01	201,060	$1,208,189,237
6/20/2018	$32.14	$32.29	$32.30	128,291	$1,218,820,573
6/19/2018	$32.20	$32.20	$32.20	134,787	$1,215,602,844
6/18/2018	$32.24	$32.23	$32.23	58,096	$1,216,682,505
6/15/2018	$32.21	$32.22	$32.22	95,553	$1,216,363,906
6/14/2018	$32.24	$32.25	$32.24	84,802	$1,217,362,650
6/13/2018	$32.25	$32.25	$32.25	72,396	$1,217,422,498
6/12/2018	$32.50	$32.48	$32.47	84,361	$1,226,181,026
6/11/2018	$32.49	$32.47	$32.47	94,823	$1,224,294,562
6/8/2018	$32.58	$32.58	$32.58	92,794	$1,226,593,485
6/7/2018	$32.42	$32.42	$32.43	102,937	$1,220,681,349
6/6/2018	$32.48	$32.48	$32.47	133,465	$1,222,709,598
6/5/2018	$32.08	$32.07	$32.07	169,667	$1,204,250,836
6/4/2018	$32.10	$32.09	$32.09	240,718	$1,200,116,943
6/1/2018	$31.86	$31.86	$31.85	225,883	$1,191,397,279