Share Purchases And Redemptions (Tables)

9 Months Ended

Sep. 30, 2012

Summary Of Share Transactions

	Shares Three Months Ended						Paid in Capital Three Months Ended						Shares Nine Months Ended						Paid in Capital Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Shares Sold		4,200,000			6,200,000		$	124,516,164		$	207,639,784			9,600,000			55,600,000		$	278,127,646		$	1,889,658,574
Shares Redeemed		(4,400,000	)		(16,800,000	)		(130,850,123	)		(529,143,018	)		(15,200,000	)		(54,000,000	)		(428,687,606	)		(1,777,212,594	)
Net Increase/ (Decrease)		(200,000	)		(10,600,000	)	$	(6,333,959	)	$	(321,503,234	)		(5,600,000	)		1,600,000		$	(150,559,960	)	$	112,445,980