Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
9/30/2016	$52.70	$52.76	$52.73	31,294	$643,670,935
9/29/2016	$52.33	$52.30	$52.31	43,076	$638,119,999
9/28/2016	$52.93	$52.89	$52.90	18,764	$645,256,598
9/27/2016	$52.49	$52.44	$52.44	26,722	$639,770,732
9/26/2016	$52.45	$52.39	$52.40	31,999	$639,146,056
9/23/2016	$52.86	$52.76	$52.75	28,919	$643,690,147
9/22/2016	$53.09	$53.11	$53.12	43,343	$647,941,055
9/21/2016	$52.53	$52.50	$52.52	21,914	$640,533,045
9/20/2016	$52.07	$52.02	$52.02	29,120	$634,645,097
9/19/2016	$52.30	$52.32	$52.32	20,873	$638,359,460
9/16/2016	$51.96	$51.97	$51.98	21,947	$634,087,707
9/15/2016	$52.15	$52.15	$52.15	34,947	$636,196,908
9/14/2016	$51.60	$51.56	$51.57	24,073	$629,088,664
9/13/2016	$51.66	$51.68	$51.68	64,919	$630,454,529
9/12/2016	$52.65	$52.61	$52.62	27,201	$641,891,518
9/9/2016	$52.03	$51.99	$51.99	97,174	$634,275,073
9/8/2016	$53.63	$53.59	$53.59	37,468	$653,798,204
9/7/2016	$53.83	$53.78	$53.79	27,347	$656,174,620
9/6/2016	$53.45	$53.50	$53.51	32,311	$652,740,184
9/2/2016	$53.62	$53.57	$53.59	37,945	$653,590,589
9/1/2016	$53.09	$53.07	$53.08	24,696	$647,403,087