Closing Market Price and NAV History

Date	Market Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
5/31/2013	$25.74	$25.45	$25.45	3,850	$17,813,668
5/30/2013	$25.68	$25.64	$25.64	6,052	$17,945,105
5/29/2013	$25.48	$25.44	$25.46	4,445	$17,811,406
5/28/2013	$25.52	$25.52	$25.52	5,009	$17,863,140
5/24/2013	$25.28	$25.31	$25.31	11,892	$17,719,249
5/23/2013	$25.27	$25.41	$25.40	6,218	$17,788,673
5/22/2013	$25.37	$25.35	$25.36	13,524	$17,744,589
5/21/2013	$25.75	$25.71	$25.71	53,227	$17,999,235
5/20/2013	$25.64	$25.65	$25.65	1,549	$17,956,055
5/17/2013	$25.51	$25.51	$25.50	1,917	$17,854,451
5/16/2013	$25.27	$25.26	$25.27	5,450	$17,682,415
5/15/2013	$25.38	$25.38	$25.37	11,070	$17,767,622
5/14/2013	$25.22	$25.28	$25.26	2,888	$17,695,101
5/13/2013	$25.00	$25.03	$25.02	5,067	$17,520,024
5/10/2013	$25.13	$25.16	$25.16	8,760	$17,613,455
5/9/2013	$25.03	$25.00	$24.99	2,323	$17,501,523
5/8/2013	$24.96	$25.06	$25.05	5,306	$17,545,447
5/7/2013	$24.93	$24.97	$24.95	26,353	$17,476,688
5/6/2013	$24.69	$24.70	$24.69	36,118	$17,293,103
5/3/2013	$24.63	$24.62	$24.61	450	$17,237,543
5/2/2013	$24.28	$24.27	$24.26	5,128	$20,631,924
5/1/2013	$24.05	$24.07	$24.06	853,510	$20,463,147