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Condensed Statement of Changes in Shareholders' Deficit (USD $)
3 Months Ended
Mar. 31, 2012
Shareholders’ deficit - opening balance $ (301,078,135) [1]
Net gain for the period 3,792,226
Adjustment of redeemable Shares to redemption value (88,665,390)
Shareholders’ deficit - closing balance $ (385,951,299)
[1] Derived from audited Statement of Financial Condition as of December 31, 2011.