Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
8/31/2016	$53.17	$53.14	$53.13	18,542	$648,334,711
8/30/2016	$53.32	$53.29	$53.30	24,046	$650,154,121
8/29/2016	$53.35	$53.30	$53.32	50,887	$650,294,833
8/26/2016	$52.68	$52.94	$52.95	27,700	$645,894,398
8/25/2016	$53.25	$53.17	$53.19	38,389	$648,716,547
8/24/2016	$53.16	$53.08	$53.10	23,988	$647,622,911
8/23/2016	$53.48	$53.43	$53.43	26,534	$651,859,968
8/22/2016	$53.05	$53.11	$53.10	25,567	$647,906,989
8/19/2016	$53.09	$53.10	$53.11	64,751	$647,869,013
8/18/2016	$53.09	$53.04	$53.03	118,324	$647,052,242
8/17/2016	$52.72	$52.72	$52.73	43,263	$643,127,692
8/16/2016	$52.84	$52.79	$52.79	40,684	$644,007,217
8/15/2016	$53.24	$53.24	$53.26	23,544	$649,554,908
8/12/2016	$52.82	$52.86	$52.86	88,436	$644,875,730
8/11/2016	$52.83	$52.87	$52.87	35,577	$645,056,023
8/10/2016	$52.65	$52.70	$52.70	23,362	$642,973,965
8/9/2016	$52.89	$52.84	$52.85	17,573	$644,667,015
8/8/2016	$52.99	$52.93	$52.94	40,479	$645,685,731
8/5/2016	$52.88	$52.94	$52.94	48,039	$645,899,902
8/4/2016	$52.35	$52.35	$52.35	36,948	$638,649,120
8/3/2016	$52.28	$52.22	$52.22	69,789	$637,074,374
8/2/2016	$51.94	$51.88	$51.89	92,126	$632,984,156
8/1/2016	$52.57	$52.62	$52.63	73,533	$641,917,416