Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
10/31/2019	$90.51	$90.51	$90.52	79,002	$2,470,798,852
10/30/2019	$91.40	$91.36	$91.36	110,305	$2,494,108,433
10/29/2019	$90.89	$90.96	$90.94	85,423	$2,483,158,825
10/28/2019	$91.40	$91.46	$91.46	104,696	$2,496,850,896
10/25/2019	$90.35	$90.33	$90.32	128,908	$2,466,120,540
10/24/2019	$89.53	$89.50	$89.49	132,356	$2,443,463,217
10/23/2019	$87.74	$87.72	$87.71	100,835	$2,394,663,639
10/22/2019	$88.33	$88.37	$88.37	89,146	$2,412,632,440
10/21/2019	$89.42	$89.41	$89.40	65,829	$2,440,924,266
10/18/2019	$88.19	$88.23	$88.21	142,558	$2,408,724,992
10/17/2019	$89.32	$89.25	$89.25	72,770	$2,440,988,966
10/16/2019	$89.15	$89.17	$89.17	280,733	$2,438,904,578
10/15/2019	$90.37	$90.34	$90.33	143,055	$2,470,907,404
10/14/2019	$88.87	$88.89	$88.90	124,445	$2,444,495,521
10/11/2019	$88.84	$88.85	$88.83	157,580	$2,447,849,848
10/10/2019	$87.12	$87.15	$87.14	89,602	$2,401,108,696
10/9/2019	$86.38	$86.48	$86.46	136,253	$2,386,912,085
10/8/2019	$85.25	$85.20	$85.19	188,803	$2,351,390,287
10/7/2019	$87.38	$87.44	$87.42	137,985	$2,413,367,307
10/4/2019	$87.74	$87.84	$87.82	130,888	$2,424,401,135
10/3/2019	$86.54	$86.47	$86.47	425,351	$2,395,234,659
10/2/2019	$85.28	$85.21	$85.23	538,640	$2,360,453,605
10/1/2019	$86.61	$86.57	$86.56	626,264	$2,432,512,114