Closing Share Price and NAV History

Please select the Month for which you wish to view pricing history:

Month   Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec       Year   2007 2008 2009 2010 2011 2012 2013         Export To Excel

Date	Share Price1	Net Asset Value2	Bid/Ask Midpoint	Volume1	Net Assets2
5/20/2013	$43.93	$43.92	$43.94	23,325	$448,015,168
5/17/2013	$43.88	$43.83	$43.86	38,885	$447,074,309
5/16/2013	$43.45	$43.38	$43.40	28,638	$442,449,330
5/15/2013	$43.67	$43.64	$43.65	63,219	$440,752,313
5/14/2013	$43.46	$43.41	$43.44	37,212	$438,473,178
5/13/2013	$42.97	$42.94	$42.95	43,893	$433,698,820
5/10/2013	$43.08	$43.08	$43.11	28,929	$435,128,802
5/9/2013	$42.80	$42.80	$42.82	27,712	$432,274,827
5/8/2013	$42.82	$42.86	$42.85	43,252	$432,885,255
5/7/2013	$42.80	$42.75	$42.75	30,128	$427,514,588
5/6/2013	$42.37	$42.33	$42.35	29,786	$423,302,787
5/3/2013	$42.16	$42.12	$42.14	46,943	$421,164,459
5/2/2013	$41.49	$41.48	$41.48	47,462	$414,765,695
5/1/2013	$41.11	$41.04	$41.05	76,417	$410,425,652