Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
12/31/2019	$72.92	$73.00	$72.97	52,648	$1,080,412,840
12/30/2019	$72.79	$72.76	$72.75	205,150	$1,076,889,531
12/27/2019	$73.19	$73.15	$73.17	18,200	$1,082,664,326
12/26/2019	$73.07	$73.10	$73.12	23,211	$1,081,926,619
12/24/2019	$72.92	$72.86	$72.88	40,388	$1,078,320,438
12/23/2019	$72.80	$72.76	$72.76	38,495	$1,076,860,176
12/20/2019	$72.92	$72.92	$72.92	21,732	$1,079,213,547
12/19/2019	$72.40	$72.37	$72.37	20,787	$1,071,040,172
12/18/2019	$71.96	$71.93	$71.94	39,981	$1,064,581,019
12/17/2019	$71.92	$71.95	$71.95	49,862	$1,064,842,711
12/16/2019	$72.12	$72.09	$72.09	39,794	$1,066,941,774
12/13/2019	$71.68	$71.66	$71.67	48,844	$1,060,530,492
12/12/2019	$71.45	$71.50	$71.50	42,410	$1,058,203,336
12/11/2019	$71.45	$71.45	$71.45	19,280	$1,057,509,841
12/10/2019	$71.32	$71.27	$71.28	25,140	$1,054,858,161
12/9/2019	$71.43	$71.38	$71.38	16,776	$1,052,792,200
12/6/2019	$71.70	$71.69	$71.69	66,118	$1,057,395,250
12/5/2019	$71.36	$71.37	$71.39	38,078	$1,052,715,368
12/4/2019	$71.43	$71.38	$71.39	23,530	$1,052,852,543
12/3/2019	$71.18	$71.12	$71.14	54,641	$1,045,521,506
12/2/2019	$71.37	$71.28	$71.30	57,390	$1,047,807,021