Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
12/31/2014	$47.33	$47.14	$47.36	37,339	$108,510,705
12/30/2014	$47.47	$47.55	$47.39	67,959	$109,457,875
12/29/2014	$47.71	$47.77	$47.71	32,197	$109,973,069
12/26/2014	$48.11	$47.89	$48.05	8,092	$110,252,239
12/24/2014	$47.59	$47.81	$47.70	7,655	$110,066,541
12/23/2014	$47.50	$47.50	$47.55	62,316	$109,346,503
12/22/2014	$47.90	$47.86	$47.93	13,530	$110,169,226
12/19/2014	$47.96	$47.86	$47.92	7,852	$110,182,920
12/18/2014	$47.83	$47.87	$47.77	22,679	$110,205,542
12/17/2014	$47.09	$47.14	$46.81	51,409	$108,510,619
12/16/2014	$46.59	$46.64	$46.42	38,398	$107,365,897
12/15/2014	$46.25	$46.42	$46.35	12,474	$106,852,476
12/12/2014	$46.79	$46.96	$46.57	19,818	$112,802,641
12/11/2014	$47.18	$47.38	$47.21	98,324	$113,808,958
12/10/2014	$47.23	$47.40	$47.28	7,209	$113,866,739
12/9/2014	$47.79	$48.06	$47.88	10,790	$115,450,337
12/8/2014	$47.97	$48.37	$47.99	6,192	$116,178,646
12/5/2014	$48.60	$48.57	$48.60	21,870	$116,671,847
12/4/2014	$48.69	$48.68	$48.63	16,746	$116,929,089
12/3/2014	$48.75	$48.59	$48.73	13,238	$116,719,043
12/2/2014	$48.64	$48.58	$48.61	23,249	$116,700,175
12/1/2014	$48.45	$48.56	$48.40	5,121	$116,644,854