Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
3/29/2018	$43.25	$43.27	$43.22	12,308	$157,950,537
3/28/2018	$42.67	$42.74	$42.77	29,328	$155,987,863
3/27/2018	$43.02	$42.91	$42.94	14,546	$156,634,802
3/26/2018	$43.80	$43.87	$43.86	11,283	$160,125,612
3/23/2018	$43.66	$42.83	$42.91	31,314	$156,333,423
3/22/2018	$43.93	$43.78	$43.86	16,717	$159,804,184
3/21/2018	$44.76	$44.74	$44.68	18,481	$163,313,065
3/20/2018	$44.54	$44.59	$44.61	9,428	$162,745,089
3/19/2018	$44.32	$44.36	$44.38	19,407	$161,931,157
3/16/2018	$44.73	$44.70	$44.67	37,314	$163,163,577
3/15/2018	$44.66	$44.59	$44.58	5,832	$162,758,457
3/14/2018	$44.80	$44.84	$44.83	11,397	$163,674,195
3/13/2018	$44.90	$44.83	$44.90	15,532	$163,620,815
3/12/2018	$44.94	$45.06	$45.01	8,991	$164,457,707
3/9/2018	$44.88	$44.84	$44.80	12,766	$163,654,133
3/8/2018	$44.22	$44.17	$44.21	11,612	$163,430,975
3/7/2018	$44.07	$44.16	$44.22	36,821	$163,394,138
3/6/2018	$43.72	$43.66	$43.69	5,798	$161,539,590
3/5/2018	$43.22	$43.23	$43.19	9,708	$159,962,021
3/2/2018	$43.03	$43.03	$43.04	102,307	$159,201,891
3/1/2018	$41.89	$42.28	$42.24	13,292	$156,435,289