Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
6/28/2019	$77.92	$77.92	$77.94	58,087	$1,203,831,374
6/27/2019	$77.42	$77.43	$77.43	87,491	$1,196,287,717
6/26/2019	$76.82	$76.83	$76.84	63,704	$1,179,386,055
6/25/2019	$77.22	$77.18	$77.20	76,681	$1,180,858,405
6/24/2019	$78.26	$78.27	$78.28	67,798	$1,197,566,219
6/21/2019	$78.67	$78.63	$78.68	107,804	$1,203,050,021
6/20/2019	$79.33	$79.29	$79.31	140,121	$1,213,094,722
6/19/2019	$78.80	$78.78	$78.78	65,289	$1,197,381,940
6/18/2019	$77.95	$77.91	$77.93	115,445	$1,184,241,169
6/17/2019	$77.52	$77.46	$77.47	71,679	$1,173,486,174
6/14/2019	$77.28	$77.27	$77.28	64,626	$1,170,602,108
6/13/2019	$77.76	$77.77	$77.81	45,650	$1,174,394,760
6/12/2019	$77.38	$77.37	$77.38	55,041	$1,164,358,814
6/11/2019	$77.07	$77.09	$77.09	97,178	$1,156,287,795
6/10/2019	$77.43	$77.39	$77.41	227,050	$1,157,045,173
6/7/2019	$77.15	$77.11	$77.11	142,561	$1,152,802,426
6/6/2019	$76.09	$76.11	$76.11	58,056	$1,137,809,498
6/5/2019	$75.63	$75.58	$75.58	159,334	$1,129,939,844
6/4/2019	$74.53	$74.51	$74.51	77,742	$1,113,907,536
6/3/2019	$72.75	$72.72	$72.70	85,206	$1,087,127,129