Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
6/29/2018	$54.76	$54.70	$54.72	38,544	$385,650,197
6/28/2018	$55.10	$55.15	$55.27	41,423	$388,788,405
6/27/2018	$55.22	$55.13	$55.19	52,626	$388,644,967
6/26/2018	$56.28	$56.31	$56.57	52,492	$397,016,678
6/25/2018	$56.49	$56.44	$56.73	59,083	$397,915,600
6/22/2018	$56.95	$56.94	$56.94	36,239	$398,567,105
6/21/2018	$57.29	$57.20	$57.38	127,854	$400,397,695
6/20/2018	$57.53	$57.65	$57.78	40,199	$397,768,785
6/19/2018	$57.47	$57.43	$57.70	66,416	$396,251,756
6/18/2018	$56.89	$56.86	$57.02	29,328	$392,326,509
6/15/2018	$56.78	$56.78	$56.85	52,631	$391,802,724
6/14/2018	$56.90	$56.87	$56.97	56,883	$403,744,597
6/13/2018	$56.95	$56.95	$56.80	40,121	$387,269,879
6/12/2018	$57.06	$57.05	$57.20	41,331	$385,059,642
6/11/2018	$57.59	$57.55	$57.60	36,289	$385,561,724
6/8/2018	$58.34	$58.27	$58.40	70,716	$390,387,398
6/7/2018	$58.28	$58.20	$58.48	138,101	$389,919,088
6/6/2018	$58.27	$58.25	$58.32	73,343	$381,512,059
6/5/2018	$57.38	$57.36	$57.63	22,163	$375,678,988
6/4/2018	$57.44	$57.41	$57.29	49,154	$373,163,090
6/1/2018	$56.84	$56.79	$56.89	47,446	$369,144,028