Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
7/31/2019	$79.51	$79.55	$79.53	86,105	$1,260,833,118
7/30/2019	$80.13	$80.16	$80.15	53,369	$1,270,566,259
7/29/2019	$80.59	$80.56	$80.57	45,387	$1,317,145,452
7/26/2019	$81.43	$81.39	$81.41	60,140	$1,289,991,956
7/25/2019	$80.67	$80.62	$80.65	66,252	$1,277,748,578
7/24/2019	$81.01	$80.98	$81.00	48,850	$1,283,478,741
7/23/2019	$80.16	$80.15	$80.17	61,115	$1,270,334,641
7/22/2019	$79.73	$79.73	$79.75	67,205	$1,259,794,244
7/19/2019	$79.70	$79.64	$79.67	67,465	$1,254,407,367
7/18/2019	$80.38	$80.37	$80.40	41,729	$1,253,804,998
7/17/2019	$80.01	$79.97	$79.99	88,026	$1,247,591,094
7/16/2019	$80.07	$80.03	$80.05	82,189	$1,248,485,461
7/15/2019	$80.70	$80.68	$80.70	198,644	$1,250,601,788
7/12/2019	$80.49	$80.46	$80.47	41,896	$1,247,084,214
7/11/2019	$80.27	$80.24	$80.25	68,433	$1,239,767,730
7/10/2019	$80.21	$80.18	$80.20	77,310	$1,238,766,233
7/9/2019	$79.84	$79.81	$79.80	57,513	$1,233,044,599
7/8/2019	$79.36	$79.37	$79.38	32,583	$1,226,315,109
7/5/2019	$79.63	$79.67	$79.64	47,779	$1,230,888,815
7/3/2019	$79.63	$79.67	$79.60	21,732	$1,230,920,281
7/2/2019	$78.87	$78.88	$78.87	40,796	$1,218,717,399
7/1/2019	$78.44	$78.40	$78.40	172,896	$1,211,280,551