Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
8/30/2019	$86.17	$86.25	$86.21	67,464	$2,445,300,463
8/29/2019	$85.92	$85.98	$85.98	109,008	$2,437,458,179
8/28/2019	$84.24	$84.29	$84.29	77,795	$2,389,702,460
8/27/2019	$84.19	$84.18	$84.17	92,844	$2,386,589,822
8/26/2019	$84.41	$84.44	$84.46	156,812	$2,393,917,739
8/23/2019	$83.56	$83.49	$83.51	125,951	$2,366,995,291
8/22/2019	$86.44	$86.42	$86.41	193,303	$2,450,019,473
8/21/2019	$86.41	$86.47	$86.46	75,650	$2,451,361,796
8/20/2019	$85.70	$85.68	$85.69	91,625	$2,429,096,938
8/19/2019	$86.29	$86.31	$86.30	157,996	$2,446,865,312
8/16/2019	$84.84	$84.91	$84.89	162,878	$2,402,914,328
8/15/2019	$83.22	$83.24	$83.23	524,460	$2,355,727,005
8/14/2019	$83.51	$83.48	$83.48	382,981	$2,366,605,776
8/13/2019	$86.10	$86.13	$86.13	353,310	$2,441,732,472
8/12/2019	$83.75	$83.79	$83.79	112,043	$2,371,371,679
8/9/2019	$85.03	$85.05	$85.05	323,625	$2,406,916,691
8/8/2019	$86.25	$86.25	$86.26	295,480	$2,436,614,889
8/7/2019	$83.54	$83.55	$83.53	246,196	$2,368,576,120
8/6/2019	$83.17	$83.20	$83.19	182,965	$2,358,856,529
8/5/2019	$82.02	$82.05	$82.03	452,601	$2,326,080,484
8/2/2019	$85.44	$85.46	$85.45	434,209	$2,435,534,151
8/1/2019	$87.46	$87.43	$87.44	226,927	$2,500,506,404